SG-8C20 - Paul Lange & Co

GB 

SHIMANO NEXUS INTER-8 COASTER HUB 

SG-8C20 

SERVICE MANUAL 

vol. 1

Contents 

The new standard in internal geared hubs 4 

Technical Service Instructions 6 

SG-8C20, CJ-8S20, SL-8S20, BL-IM65 

Troubleshooting Chart 12 

Replacement of the internal unit 14 

Disassembly of the internal unit 16 

Assembly of the INTER-8 coaster hub 21 

Cassette Joint & Measurement tool 28 

NEXUS non-turn washers 30 

Hub dimensions (O.L.D. and axle) 31 

Spare parts list (SG-8C20) 32 

Spare parts list (SL-8S20) 33 

Spare parts list (CJ-8S40) 34 

Spare parts list (BL-IM65) 35

4 

The new standard in internal geared hubs 

The NEXUS 8-speed system delivers a new level of design, quality and function. Our designers have updated 

the conventional internal hub with a refreshing new design inspired by the concepts of beauty, innovation 

and integrity. Many technical advances have been achieved, like incorporating Shimano’s unique gear 

change support mechanism that makes a real low effort shifting. 

BR-IM70-R 

Roller Brake 


SB-8S20 ST-8S20 

BL-IM65 

SG-8R25 

Premium version 


Roller Brake 


Coaster Brake 

SG-8R25-VS 

SG-8R20-VS 

V-Brake 

Small Parts Set FC-NX60 

33/38T 

FC-NX80 

HOLLOWTECH 

Crankset 

SL-8S20 

BB-UN25 

BL-IM65 


BL-IM65 

3-finger 

Brake lever 

BL-IM60 

4-finger 

Brake lever 

ST-8S20 

3-finger 

Brake lever 

SL-8S20 

SB-8S20 

4-finger 

Brake lever

SG-8R25 Premium Version for Roller Brake 

SG-8R20 Roller Brake Version 

SG-8R25-VS V-Brake Version 

SG-8R20-VS V-Brake Version 

SG-8C20 Coaster Brake Version 

• Gear Change Support Mechanism 

Shimano’s gear change support mechanism uses 

pedaling power to aid down-shifting. The result 

is fast and accurate down-shifting with an exeptionally 

light feeling. Mechanical shifting resistance 

is notably reduced so shifting is not affected 

under high loads. 

shifting torque 

driver rotation torque 

• Smooth Gear Change 

The smaller idling angle realizes shockless 

smoother shifting for stressless comfortable gear 

change. 

INTER-7 INTER-8 

• Smoother Rotation 

Shimano’s precise manufacturing abilities 

construct an internal hub that rotates with 

significantly less drag than previous models. 

• Close Ratio Wider Range 

The INTER-8 hub has increased its gear ratio to 

307%, compared to 244% of the INTER-7 hub. 

2.0 

1.5 

1.0 

0.5 

244% 

low-high 

difference 

0.63 (32T) 

0.53 (38T) 

20~90º 

0.74 (27T) 

0.64 (31T) 

0.84 (24T) 

0.75 (27T) 

0.99 (20T) 

0.85 (24T) 

1.15 (17T) 

1.00 (20T) 

10~30º 

1.34 (15T) 

1.22 (16T) 

1.55 (13T) 

1.42 (14T) 

1st 2nd 3rd 4th 5th 6th 7th 8th 

1.61 (12T) 

307% 

low-high 

difference 

• Better Sealing 

The INTER-8 hub has adopted a labyrinth seal 

system that shuts out water and dirt to extend 

the service life and maintain smooth shifting in all 

circumstances. Optionally a waterproof dust cap 

can be installed ex factory on the non-drive side 

before shipment, in case you wish to use the hub 

in combination with a seperate brake system such 

as V-Brakes. 

labyrinth seal 

• Robust Construction 

Durable planetary and step-up gear sets assure 

long trouble-free service. 

ST-8S20 Shifter with 3-finger Brake Lever 

BL-IM65 3-finger Brake Lever 

SB-8S20 Shifter with 4-finger Brake Lever 

SL-8S20 Shifter 

BL-IM60 4-finger Brake Lever 

• Fast and Light Shifting 

In combination with the Gear Change Support 

Mechanism the shifting action is quick and light 

even during hight pedaling loads. 

• Easy-to-read Gear Indicator 

Larger more visible indicator numbers make gear 

positions easier to read. Additionally, indicator 

symbols help to understand the direction of 

shifting progression. 

• INTER-8 (SG-8C20): 30% more braking 

power compared to INTER-7 

30% more powerful 

3.0 

2.5 

2.0 

1.0 

0.0 

INTER-8 

INTER-7 

1 2 3 4 5 6 7 8 

5

6 

General Safety Information 

– To avoid serious 

WARNING injuries: 

• It is important to completely understand 

the operation of your bicycle's brake 

system. Improper use of your bicycle's 

brake system may result in a loss of 

control or an accident, which could lead 

to sever injury. Because each bicycle may 

handle differently, be sure to learn the 

proper braking technique (including 

bicycle control characteristics) and 

operation of your bicycle. This can be 

done by consulting your professional 

bicycle dealer and the bicycle owner's 

manual, and by practicing your riding 

and braking technique. 

• When securing the brake arm to the 

frame, be sure to use a brake arm clip 

that matches the size of the chainstay, 

and securely tighten them with the clip 

screw and clip nut to the specified 

tightening torque. 

Use a lock nut with a nylon insert (selflocking 

nut) for the clip nut. It is recommended 

that standard Shimano parts 

be used for the clip screw, clip nut and 

brake arm clip. In addition, use a brake 

arm clip that matches the size of the 

chainstay. 

If the clip nut comes off the brake arm, 

or if the clip screw or brake arm clip 

becomes damaged, the brake arm may 

rotate on the chainstay and cause the 

handlebars to jerk suddenly, or the 

bicycle wheel may lock and the bicycle 

may fall over, causing serious injury. 

• When installing the hub to the frame, 

be sure to install the correct non-turn 

washers to the left and right sides, and 

securely tighten the hub nuts to the 

specified torques. If the non-turn washers 

are installed to one side only, or if the 

hub nuts are not tightened sufficiently, 

the non-turn washer may fall out, which 

could cause the hub axle to rotate and 

the cassette joint to turn. This may then 

cause the handlebars to be accidentally 

pulled by the shifting cable, and an 

extremely serious accident could result. 

• Obtain and read the service instructions 

carefully prior to installing the parts. 

Loose, worn, or damaged parts may 

cause serious injury to the rider. 

We strongly recommend only using 

genuine Shimano replacement parts. 

• Check that the wheels are fastened 

securely before riding the bicycle. If the 

wheels are loose in any way, they may 

come off the bicycle and serious injury 

may result. 

• Read these Technical Service Instructions 

carefully, and keep them in a safe place 

for later reference. 


CAUTION injuries: 

• Avoid continuous application of the 

brakes when riding down long slopes, as 

this will cause the internal brake parts to 

become very hot, and this may weaken 

braking performance. It may also cause a 

reduction in the amount of brake grease 

inside the brake, and this can lead to 

problems such as abnormally sudden 

braking. 

• Spin the wheel and confirm that the 

braking force of the coaster brake is 

correct. 

• If the brakes are used frequently, the 

brake drum may become hot. Do not 

touch the brake drum for at least 

30 minutes after you finish riding the 

bicycle. 

NOTE: 

Brake drum 

• You can shift gears while pedaling, but 

on rare occasions the pawls and ratchet 

inside the hub may produce some noise 

afterwards as part of normal gear shifting 

operation. 

• The CJ-8S20 cassette joint should only be 

used with sprockets from 16T to 23T. 

• If the wheel becomes stiff and difficult to 

turn, you should replace the brake shoes 

or lubricate with grease. 

• Do not apply any lubricant to the inside 

of the hub, otherwise the grease will 

come out. 

• You should periodically wash the sprockets 

in a neutral detergent and then 

lubricate them again. In addition, cleaning 

the chain with neutral detergent and 

lubricating it can be a effective way of 

extending the useful life of the sprockets 

and the chain. 

• If the chain keeps coming off the sprockets 

during use, replace the sprockets and 

the chain. 

• Parts are not guaranteed against natural 

wear or deterioration resulting from 

normal use. 

• For maximum performance we highly 

recommend Shimano lubricants and 

maintenance products. 

• For any questions regarding methods of 

handling or adjustment, please contact 

the place of purchase. 


CJ-8S20 

Installation of the cassette joint 

to the hub 

1. Install the driver cap to the driver on the 

right side of the hub body. 

Driver cap 

Driver 

Driver cap 

2. Turn the cassette joint pulley in the 

direction of the arrow in the illustration 

to align the red ● marks on the pulley 

and the bracket. With the cassette joint 

in this condition, install it so that the 

red ● mark on the cassette joint is 

aligned with the red ● mark on the 

right side of the hub body. 

Cassette joint 

Align the 

red ● marks 

to install. 

Right side of 

the hub body 

Should be aligned 

CJ-8S20 

JAPAN 

Pulley 

Bracket 

CJ-8S20 

JAPAN 

SI-35P0A 

INTER-8 Hub 

with Coaster Brake 

Cassette Joint 

Technical Service Instructions 

Be sure to read these service instructions in 

conjunction with the service instructions for 

the INTER-8 shifting lever before use. 

Note the 

direction 

Align the 

red ● marks 

to install.

3. 1) Secure the cassette joint to the hub 

with the cassette joint fixing ring. 

When installing the cassette joint fixing 

ring, align the yellow ● mark with the 

yellow ● mark on the cassette joint 

pulley. 

Align the 

yellow ● 

marks to 

install. 


pulley 

LOCK 

JAPAN 

CJ-8S20 

CJ-8S20 

JAPAN 

CK 

O 

L 

Cassette joint fixing ring 

LOCK 

CJ-8S20 

3. 2) After installing the cassette joint fixing 

ring, turn it 45º clockwise. 

Turn 45º 

JAPAN 


fixing ring 

Fit the cassette joint bracket 

securely. 

Installation of the hub 

to the frame 

1. Mount the chain on the sprocket, and 

then set the hub axle into the fork ends. 

Hub axle 

Fork end 

2. Place the non-turn washers onto the right 

side and left side of the hub axle. At this 

time, turn the cassette joint so that the 

projecting parts of the non-turn washers 

fit into the grooves of the fork ends. If 

this is done, the cassette joint can be 

installed so that it is almost parallel to the 

chainstay. 

Non-turn washer 

(for left side) 

Chainstay 

7R 

J-8S20 

JAPAN 

C 

CK 

LO 

7R 

J-8S20 

JAPAN 

C 

CK 

Cap nut 



LO 

Groove of 

fork end 

Non-turn 

washer (for 

right side) 

� Different types of left and right nonturn 

washers are available for use with 

standard and reversed fork ends. Use 

whichever non-turn washers are suitable. 

Fork end 

Standard 

Reversed 

Reversed 

(full chain 

case) 

Right 

5R/Yellow 

7R/ Black 

6R/Silver 

5R/Yellow 

Mark 


Mark/Color 

Left 

5L/Brown 

7L/Gray 

6L/White 

5L/Brown 

� The projecting parts should be on the 

fork end side. 

� Install the non-turn washers so that the 

projecting parts is securely in the fork 

end grooves on either side of the hub 

axle. 

3. Take up the slack in the chain and secure 

the wheel to the frame with the cap nuts. 

R 

7 

Size 

θ �� 20ºº® 

θ �� 38�� 

θ = 0�� 

θ = 0�� 

Tightening 

torque: 

30 – 45 N·m 

{260 – 390 in. lbs.} 

4. Fix the brake arm securely to the chainstay 

with the brake arm clip. 

Brake arm 

Clip nut 

Clip screw 

Brake arm clip 

Chainstay 

NOTE: 

• When installing the brake arm clip, 

securely tighten the clip screw while 

holding the clip nut with a 10 mm 

spanner. 

Tightening torque: 

2 – 3 N·m {17 – 26 in. lbs.} 

• After installing the brake arm clip, 

check that the clip screw protrudes 

about 2 – 3 mm from the surface of the 

clip nut. 

Clip nut 

2 – 3 mm 

Brake arm 

Brake arm clip 

Clip screw 

(M6 x 16 mm) 

5. Before using the Coaster Brake, check 

that the brake works properly and that 

the wheel turns smoothly. 

7



WARNING injuries: 


carefully prior to installing the 

parts. Loose, worn, or damaged 

parts may cause serious injury to the 

rider. 

We strongly recommend only using 

genuine Shimano replacement parts. 

• It is important to completely understand 

the operation of your bicycle's 

brake system. Improper use of your 

bicycle's brake system may result in a 

loss of control or an accident, which 

could lead to severe injury. Because 

each bicycle may handle differently, 

be sure to learn the proper braking 

technique (including brake lever 

pressure and bicycle control characteristics) 

and operation of your bicycle. 

This can be done by consulting 

your professional bicycle dealer and 

the bicycle's owners manual, and by 

practicing your riding and braking 

technique. 

• These brake levers are equipped 

with a mode switching mechanism 

to make them compatible with 

cantilever brakes and Roller Brakes 

or V-Brakes with power modulator. 

If the incorrect mode is selected it 

may cause either excessive or insufficient 

braking force to occur, which 

could result in dangerous accidents. 

Be sure to select the mode in accordance 

with the instructions given in 

the table below. 

8 

Mode 

position 

C/R position 

V 

V 

V 

C R 

V 

C R 

The C indicates the 

mode position for compatibility 

with cantilever 

brakes. 

The R indicates the 

mode position for compatibility 

with Roller 

Brakes. 

V position 

C R 

C R 

The V indicates the 

mode position for 

compatibility with 

V-Brakes with power 

modulator. 

Use the brake levers with mode 

switching mechanism in the combinations 

given above. 

• Read these Technical Service 

Instructions carefully, and keep them 

in a safe place for later reference. 

CAUTION 

Applicable 

brake 

• Cantilever 

brakes 

• Roller 

Brakes 

• V-Brakes 

with 

power 

modulator 

– To avoid 

serious injuries: 

Be sure to shift the lever one gear at 

a time, and reduce the force being 

applied to the pedals during shifting. 

If you try to force operation of the 

shifting lever while the pedals are 

being turned strongly, your feet may 

come off the pedals and the bicycle 

may topple over, which could result 

in serious injury. 

NOTE: 


recommend Shimano lubricants 

and maintenance products. 

• Parts are not guaranteed against 

natural wear or deterioration resulting 

from normal use. 

SL-8S20 

BL-IM65 

CJ-8S20 

SI-6FD0A 

Revo-shift 

Lever 

Brake Lever 



Be sure to read these service 

instructions in conjunction with 

the service instructions for the 

Inter-8 hub before use. 

Revo-shift lever operation 

Turn the Revo-shift lever to shift to 

each of the eight gears. 

Indicator 

Pedaling becomes heavier 

Indicator moves toward ➇ 

Pedaling becomes lighter 

Indicator moves toward ➀ 

Revo-shift lever 

Installation of the lever 

Install the lever as shown in the illustration. 

In case of using Shimano 

half grip, the straight 

section of the handlebar 

should be 166 mm or 

more in length; attach 

the Revo-shift lever to 

this straight section. 

Clamp bolt 

3 

Tighten 

3 mm Allen 

key 

1 


2 – 2.5 N·m 

{20 – 25 kgf·cm} 

2 

Leave a gap 

of 0.5 mm 

between the 

Revo-shift 

lever and the 

half grip. 

Handlebar 

� 22.2 mm 

1 

� 22.2 mm 

Half grip 

3 

Tighten 

2 

Clamp bolt 

5 mm Allen 

key 


6 – 8 N·m Grip {60 – 80 kgf·cm} 

Disconnecting the shifting cable 

when removing the rear wheel from 

the frame 

Disconnect the cable from the 

cassette joint when removing the 

rear wheel from the frame. 

CJ-8S20 

JAPAN 

LOCK 

CJ-8S20 

JAPAN 

LOCK 

LOCK 

CJ-8S20 

JAPAN 

CJ-8S20 

NOTE: 

If reusing the cable, refer to steps 

7 to 9 in "Installation of the shifting 

cable". 

JAPAN 

Cassette 

joint 

1. Set the Revo-shift lever to ➀. 

2. Pull the outer casing out from 

the outer casing holder of the 

cassette joint, and then remove 

the inner cable from the slit in 

the bracket. 

Bracket 

Outer casing holder 

Pull out from 

outer casing 

holder. 

1 

Slit 

2 

Remove from the slit. 

3. Remove the inner cable fixing 

bolt unit from the cassette joint 

pulley. 

Inner cable fixing bolt unit 

Cassette joint pulley 

If it is difficult to pull the outer 

casing out from the outer casing 

holder of the cassette joint, insert 

a 2 mm Allen key or a #14 spoke 

into the hole in the cassette joint 

pulley, and then turn the pulley 

to loosen the inner cable. Then 

remove the inner cable fixing bolt 

unit from the pulley first, and 

after this remove the outer casing 

from the outer casing holder. 

2 

Remove the 

inner cable fixing 

bolt unit 

1 

Turn the 

pulley 

Set to ➀ 

3 

Pull out 

from the 

outer casing 

holder 

Pulley hole 

2 mm Allen key or 

#14 spoke 

Use a shifting cable with one 

inner cable drum. 

Cable with one inner cable drum / 

SIS-SP40 (4 mm dia.) 

1. Set the Revo-shift lever to ➀. 

Set to ➀ 

■ Revo-shift lever side 

2. Loosen the cover fixing screw, and 

then remove the upper cover. 

Cover fixing screw 

Upper cover 

3. Pass the inner cable from the hole 

in the winder unit through the 

hole in the cable adjustment bolt. 

Next, insert the inner cable into 

the groove of the cable guide, 

and pull the inner cable so that 

the inner cable drum fits into the 

recess in the winder unit. 

2 

Installation of the 

shifting cable 

Hole in cable 

adjustment bolt 

Groove in cable guide 

3 

1 

4 

Recess in winder unit 

Hole in 

winder unit 

4. Replace the upper cover and 

tighten the cover fixing screw. 


0.1 – 0.2 N·m {1 – 2 kgf·cm} 

Cover fixing screw 

Upper cover

5. Pass the inner cable through the 

SIS-SP40 outer casing through the 

end with the plastic cap. 

Aluminium cap 

Plastic cap 

If cutting the outer casing, cut it near the 

end with the plastic cap while the cap is 

still attached. Then make the cut end 

perfectly round and attach the plastic cap. 

■ Cassette joint side 

6. After checking that the end of the 

outer casing is sitting securely in 

the cable adjustment bolt of the 

Revo-shift lever, attach the inner 

cable fixing bolt unit to the inner 

cable. 


Note: Do not use this inner cable fixing bolt 

unit with the CJ-4S30 cassette joint. 

10 mm 

(Black) 

7. Bring the cable around to the 

cassette joint pulley, hold so that 

the inner cable fixing nut is facing 

to the outside (toward the fork 

end), and then slide the flats part 

of the inner cable fixing washer 

into the gap in the pulley. 

Inner cable 

fixing nut 

Remove the plastic cap. 

Make the cut end 

perfectly round. 

Attach the plastic cap. 

Pass the inner cable 

through the hole. 

101 mm 

LOCK 

Inner cable fixing 

nut 


washer 


bolt 

Pulley 

CJ-8S20 

JAPAN 

Plastic cap 

Pull the inner cable while attaching the inner 

cable fixing bolt unit. 


4 – 6 N·m {40 – 60 kgf·cm} 

Flats part of inner 

cable fixing washer 

8. Turn the cable 60º counterclockwise 

and attach it to the hook. 

Hook 

Turn the 

cable 60º 

CJ-8S20 

JAPAN 

LOCK 

10 cm 

CJ-8S20 

JAPAN 

LOCK 

CJ-8S20 

JAPAN 

LOCK 

LOCK 

CJ-8S20 

9. Attach the inner cable to the pulley 

as shown in the illustration, pass the 

inner cable through the slit in the 

cassette joint bracket, and then 

insert the end of the outer casing 

securely into the outer casing holder. 

Inner cable 

JAPAN 

Pulley 

Bracket 

Bracket 


Insert into 

the outer 

2 casing 

holder 

Slit 

1 

Pass through the slit 

If first inserting the outer casing into the 

outer casing holder is easier, then first insert 

the outer casing into the outer casing holder, 

and then insert a 2 mm Allen key or a 

#14 spoke into the hole in the cassette joint 

pulley, and then turn the pulley so that the 

inner cable fixing bolt unit fits into the gap 

in the pulley. 

Insert the inner 

cable fixing bolt 

unit. 

2 

Turn the 

pulley 

3 1 

CJ-8S20 

JAPAN 

Hole in pulley 

2 mm Allen key or #14 spoke 

Note: 

Check that the inner cable is correctly seated 

inside the pulley guide. 

Guide Guide 

OK Not OK 

Gap in pulley 10. Secure the cable to the frame with 

the outer casing bands. 

10 cm 15 cm 

Outer casing bands 

Insert into the 

outer casing 

holder. 

LOCK 

CJ-8S20 

JAPAN 

Adjusting the cassette joint 

1. Set the Revo-shift lever to ➃. 

Check to be sure that the yellow setting 

lines on the cassette joint bracket and 

pulley are aligned at this time. 

Set to ➃ 

JAPAN 

CJ-8S20 

CK 

O 

L 

LOCK 

LOCK 

CJ-8S20 

JAPAN 

CJ-8S20 

If the yellow setting lines are not aligned, 

turn the cable adjustment bolt of the 

Revoshift lever to align the setting lines. 

After this, move the Revo-shift lever once 

more from ➃ to ➀ and then back to ➃, 

and then recheck to be sure that the yellow 

setting lines are aligned. 

Cable adjustment bolt 

Yellow setting lines 

The yellow setting lines on the cassette joint 

are located in two places. Use the one that 

is easiest to see. 

When bicycle is standing up 


bracket 

2. After adjusting the cassette joint, cut 

off the excess length of inner cable 

and then install the inner end cap. 

JAPAN 

When bicycle is upside down 


bracket 

15 – 20 mm 

Should be straight 


CJ-8S20 

JAPAN 

CK 

LO 

Cassette 

joint pulley 

Cassette 

joint pulley 

Inner end cap 

9

10 


WARNING 

– To avoid serious injuries: 


carefully prior to installing the parts. Loose, 

worn, or damaged parts may cause serious 

injury to the rider. 

We strongly recommend only using genuine 

Shimano replacement parts. 

• Read these Technical Service Instructions 

carefully, and keep them in a safe place for 

later reference. 

NOTE: 

• The CJ-8S40 cassette joint should only be 

used with sprockets from 16T to 23T. 

• When lubricating the chain or the sprockets, 

be careful not to get any oil on the 

rubber bellows or the rubber cover of the 

cassette joint. 


recommend Shimano lubricants and 

maintenance products. 

• Parts are not guaranteed against natural 

wear or deterioration resulting from normal 

use. 

CJ-8S40 


CJ-8S40 CJ-8S40 

JAPAN JAPAN 

CJ-8S40 CJ-8S40 

LOCK LOCK 

JAPAN JAPAN 

SI-74Y0A 

Refer to the Service Instructions for the INTER-8 hub for 

details on installation of the cassette joint to the hub 

and installation of the non-turn washer. 

7R 7R 

• The projecting parts should be 

on the fork end side. 

• Install the non-turn washers so that the projecting 

parts are securely in the fork end grooves 

on either side of the hub axle. 

Disconnecting the shifting cable when removing the rear wheel from the frame 

Disconnect the cable from the cassette joint when 

removing the rear wheel from the frame. 

1. Set the shifting lever to ➀. 

2 

Remove the 

rubber bellows 

from the slit 


Set to ➀ 


2. Hold the rubber cover and pull the outer casing 

holder out from the outer casing holder section 

of the cassette joint. Then remove the inner 

cable attached to the rubber bellows from the 

slit in the bracket. Be careful not to damage the 

rubber bellows at this time. 

Rubber bellows 

1 

Pull out the 

outer casing 

holder 

Rubber cover 

Note: 

Do not remove the cable by pulling the outer 

casing. 

Installation of the cassette joint Installation of the shifting cable 

Note: 

• Different types of left and right non-turn washers 

are available for use with standard and 

reversed fork ends. Use whichever non-turn 

washers are suitable. 

Fork end 

Standard 

Reversed 

Reversed 

(full chain 

case) 

Mark 

3. Remove the inner cable fixing bolt unit from 

the cassette joint pulley. 


Cassette joint pulley 

LOCK LOCK 

LOCK LOCK 

CJ-8S40 

JAPAN 

CJ-8S40 

JAPAN 

If it is difficult to pull the outer casing holder 

out from the outer casing holder section of the 

cassette joint, insert a 2mm Allen key or a #14 

spoke into the hole in the cassette joint pulley, 

and then turn the pulley to loosen the inner 

cable. Then remove the inner cable fixing bolt 

unit from the pulley first, and after this remove 

the outer casing holder from the outer casing 

holder section. 

2 

Remove the inner 3 

cable fixing bolt unit Remove the 

outer casing 

holder 

1 

Turn the 

pulley 

Right 

5R/Yellow 

7R/ Black 

6R/Silver 

5R/Yellow 


Mark/Color 

Left 

5L/Brown 

7L/Gray 

6L/White 

5L/Brown 

Pulley hole 

2mm Allen key 

or #14 spoke 

Note: 

If reusing the cable, refer to steps 6 to 8 in 

“Installation of the shifting cable”. 

. 

Size 

θ �� 20�� 

θ �� 38�� 

θ = 0�� 

θ = 0�� 

Use a shifting cable with one inner cable drum. 

SIS-SP (4 mm or 5 mm dia.) 

Shifting lever end 

Shield cap 

Note: 

Make sure that the shield cap is at the shifting 

lever end. 

■ Shifting lever side 

1. Connect the shifting cable to the shifting lever. 

■ Cassette joint side 

2. Set the shifting lever to ➀. 

Cassette joint end 

Refer to the Service Instructions which are 

provided with the INTER-8 shifting lever. 

3. Install the rubber cover and rubber bellows to 

the outer casing holder. 

Rubber bellows Outer casing 

holder 

Rubber cover 

4. Wipe away any grease which may be on the inner 

cable, and then pass the inner cable through the 

rubber bellows. After this, insert the outer casing 

into the rubber cover and set it into the outer 

casing holder. 

Use a new inner cable. Do not use a cable 

which has had the end cut off. 

1) While holding the end of the rubber bellows, insert 

the inner cable. Be careful not to pierce the rubber 

bellows with the end of the inner cable at this time. 

End of rubber bellows 

Set to ➀ 

Be careful of the inner cable end. 

OK Not OK 

Not OK 

2) Slide the rubber bellows onto the inner cable. 


Inner cable

3) Push the outer casing on so that it securely 

touches the outer casing holder. 

Inner cable Outer casing holder 

Rubber bellows Rubber cover 

5. After checking that the end of the outer 

casing is sitting securely in the cable adjustment 

bolt of the shifting lever, attach the 

inner cable fixing bolt unit to the inner cable. 

10 mm 

(Black) 

Turn the 

cable 60° 


127 mm 

LOCK LOCK 

CJ-8S40 

JAPAN 

LOCK LOCK 

CJ-8S40 

JAPAN 

Outer casing 

Note: Do not use this inner cable fixing bolt unit 

with the CJ-4S30 cassette joint. 

Pass the inner cable through the hole. 


4 – 6 N·m (40 – 60 kgfcm) 

6. Bring the cable around to the cassette joint 

pulley, hold so that the inner cable fixing nut 

is facing to the outside (toward the fork 

end), and then slide the flats part of the 

inner cable fixing washer into the gap in the 

pulley. 

Inner cable 

fixing nut 

7. Turn the cable 60° counterclockwise and 

attach it to the hook. 

Hook 

Flats part of inner 

cable fixing washer 

Pulley 

Inner cable fixing nut 


washer 

Inner cable fixing bolt 

63 mm or less 

Pull the inner cable while attaching 

the inner cable fixing bolt unit. 

Gap in pulley 

8. Attach the inner cable to the pulley as shown in 

the illustration, pass the part of the inner cable 

which has the rubber bellows attached through 

the slit in the cassette joint bracket, and then 

insert the outer casing holder securely into the 

outer casing holder section. Be careful not to 

damage the rubber bellows at this time. 

Inner cable 

CJ-8S40 CJ-8S40 

JAPAN JAPAN 

Pulley 

Insert the inner 

cable fixing bolt 

unit 

LOCK LOCK 

CJ-8S40 

JAPAN 

10 cm 

LOCK LOCK 

LOCK LOCK 

CJ-8S40 CJ-8S40 

JAPAN JAPAN 

Outer casing holder section 

Slit 



Rubber 

cover 

CJ-8S40 

JAPAN 

Bracket 

If first inserting the outer casing holder into 

the outer casing holder section of the cassette 

joint is easier, then first insert the outer 

casing holder into the outer casing holder 

section of the cassette joint, and then insert 

a 2mm Allen key or a #14 spoke into the hole 

in the cassette joint pulley, and then turn the 

pulley so that the inner cable fixing bolt unit 

fits into the gap in the pulley. 

2 

Turn the 

pulley 

Hole in pulley 

2 mm Allen key or #14 spoke 

Insert the 

1 

rubber bellows 

into the slit 

2 Attach the 

outer casing 

holder 

3 1 

10 cm 15 cm 

Attach the 

outer casing 

holder 

Note: Check that the inner cable is correctly 

seated inside the pulley guide. 

Guide Guide 

OK 

Not OK 

Outer casing bands 

LOCK LOCK 

CJ-8S40 

JAPAN 

9. Secure the cable to the frame with the outer 

casing bands. 

Adjusting the cassette joint 

1. Set the shifting lever to ➃. 

Check to be sure that the yellow setting lines 

on the cassette joint bracket and pulley are 

aligned at this time. 

Yellow setting lines 

Set to ➃ 

The yellow setting lines on the cassette joint 

are located in two places. Use the one that is 

easiest to see. 

Cassette joint bracket 

15 – 20 mm 

When bicycle is standing up 

JAPAN 

LOCK CJ-8S40 

Cassette joint bracket 


LOCK CJ-8S40 

JAPAN 

LOCK 

CJ-8S40 

If the yellow setting lines are not aligned, turn 

the cable adjustment bolt of the shifting lever 

to align the setting lines. After this, move the 

shifting lever once more from ➃ to ➀ and then 

back to ➃, and then re-check to be sure that 

the yellow setting lines are aligned. 

2. After adjusting the cassette joint, cut off the 

excess length of inner cable and then install 

the inner end cap. 

JAPAN 

When bicycle is upside down 


Cable adjustment bolt 

Inner end cap 

CJ-8S40 

JAPAN 

LOCK 


pulley 


pulley 

11

12 

Troubleshooting Chart 

SHIMANO NEXUS INTER-8 Coaster Hub 


2 3 

35 

36 37 

CJ-8S20 

1 

29 

25 26 27 28 

19 20 21 22 23 24 

Internal Assembly 

30 31 32 34 19 

Abnormal noise 

occurs. 

4 

5 6 7 

Same treatment of 8R20 

Abnormal noise 

still occurs after 

adjusting cable. 

Trouble condition Remedy 

Cable is incorrectly 

adjusted. 

While 

shifting 

While 

pedaling 

1 

8 9 10 11 12 13 14 15 16 17 18 

Shifting 

position 

Shifting 

position 

1��2 

2��3 

3��4 

6��7 

7��8 

5��6 

All 

Set the shift lever to 4th. Then turn the cable 

adjusting barrel to align the red setting lines 

on the cassette joint bracket and pulley. 

Shift down to the 1st gear, up to 

the 4th again and recheck the adjustment. 

Replace the hub axle unit and 

carrier unit. 

Replace the hub axle unit, clutch unit 

and carrier unit. 

Replace the driver unit, hub axle unit 

and carrier unit. 

33 

38 

39 

40 

41 

Internal Hub 

Grease 

(For coaster brake also) 

TL-8S30 

TL-8S20 

TL-8S11 

04 

PE-LD

Troubleshooting Chart 

Gear shift 

is not 

possible. 

While 

pedaling. 

While not 

pedaling. 

While 

braking. 

Cable is incorrectly 

adjusted. 

Remove the wheel 

from the frame and 

check whether gear 

shifting is possible. 

Shifting lever indicator doesn’t match hub 

shifting position. 

Turning is stiff. 

Gear Unsmooth 

Cone Unsmooth 


Free rotation is stiff. 

Following treatment is for 8C 

Braking is too sudden. 

Gear shifting is 

possible: 

When the shifting 

lever doesn’t 

operate. 

Gear shifting is not 

possible. 

When the hub 

doesn’t work. 

4.8 

Except 4.8 

4.8 

Except 4.8 

Set the shift lever to 4th. Then turn the 

cable adjusting barrel to align the red 

setting lines on the cassette joint 

bracket and pulley. 

Replace the shifting lever. 

Replace the carrier unit and 

hub axle unit. 

Replace the carrier unit and hub axle 

unit. 


carrier unit. 

Replace the carrier unit. 


carrier unit. 

Replace the carrier unit. 

Replace the right hand cone and 

driver. 

Replace the shell, ball retainer and 

driver unit. 


Replace the brake shoe unit, Driver 

unit & axle unit. 

Braking force is weak. Replace the brake shoe unit. 

Pedal turning angle for brake 

to operate is too large. 

Wheels lock when bicycle is pushed backward. 

A squeaking sound caused by lack of lubrication 

can be heard. 

Replace the brake shoe unit, Driver 

unit& axle unit. 

Replace carrier unit, driver unit and 

clutch unit. 

Apply grease or replace the brake 

shoe unit. 

Brakes do not release. Replace the brake shoe unit and 

carrier unit. 

13

14 

Replacement of the internal unit 


Note: 

Unit parts should never be 

disassembled. If they are, 

problems may result. 

When replacing parts, replace 

the whole internal assembly or 

whole unit part. 

Tools 

Note: 

Unit parts should never be 

disassembled. If they are, 

problems may result. 

When replacing parts, replace 

the whole internal assembly or 

whole unit part. 

Note: 

For internal unit replacement 

only tools "e" and "f" are 

necessary. 

1. Hold the two bevelled 

surfaces of the hub axle on 

the brake arm side in a vice 

and remove the dust cap. 

2. Turn the hub upside down 

and hold the two bevelled 

surfaces of the hub axle on 

the sprocket side in a vice. 

Note: 

Do not damage 

the threads of 

the hub axle. 

a 

b 

d 

c e f 

a: Hammer 

b: TL-8S11 

Right Hand Cone Removal Tool 

Part No. Y-708 00600 

c: TL-8S20 

Right Hand Cone Installation Tool 

Part No. Y-708 00200 

d: TL-8S30 

Carrier Unit Alignment tool 

Part No. Y-708 00300 

e: Screwdriver 

f: TL-7S20 

Hub Spanners 17mm x 22mm (2 pcs.) 

Part No. 3-130 9890 

(We recommend the use of protective glasses 

during disassembly and assembly) 

Note: 

Do not damage the threads of 

the hub axle. 

Vice 

Remove the left hand locknut 

from the hub axle, and then 

remove the stop nut. 

TL-7S20 

Locknut 17mm (Y-35P 28000) 

Stop Nut 22mm (Y-35P 22000)

3. Remove the brake arm unit 

and ball retainer B from the 

hub axle. 

4. Remove the hub shell. 

Now it can be replaced 

with the new internal 

assembly. 

Disassembly and assembly can be 

carried out quickly. 

Part No. 36P 98010 

Brake arm unit 

Ball retainer B 

Hub shell 

Internal assembly 

15

16 

Disassembly of the internal unit 

1. Remove the brake shoe unit. 

2. Carefully remove the stop ring 

with a screwdriver. Because 

the stop ring will tend to 

come off with some force, 

use a piece of cloth to prevent 

loss. 

3. Remove carrier unit and ring 

gear by lifting straight up. 

Do not rotate to disengage. 

4. Remove the ring gear slide 

spring with a screwdriver. 

Ring gear slide spring 

(Y-35P 12000) 

Brake shoe unit 

Screwdriver 

Stop ring 

(Y-33Y 19000) 

Carrier unit (Y-35P 98040) 

Ring gear slide spring (Y-35P 12000) 

Ring gear 1 

(Y-35P 11000)

5. Remove ball retainer O 

(3/16"X26) while pushing 

pawls B. 

6. Reverse axle unit in vice to 

access the drive side cone 

assembly. 

7. Remove the locknut with a 

17mm hub spanner. 

8. Remove the stop washer. 

Pawls B 

Ball retainer O 

(Y-34R 98030) 

Right hand locknut 

(Y-33Z 07020) 

Stop washer 

(Y-34R 09000) 

17

18 

9. Remove the lock washer. 

10. Remove the driver plate. 

11. Support the driver assembly 

on the vice, as shown. Set 

cone removal tool (TL-8S11) 

into the groove such that 

the pawl A is contacting the 

notch in the tool, see detail. 

Strike the tool with the 

hammer until cone and 

axle unit are separated. 

Lock washer 

(Y-34R 98090) 

Driver plate 

(Y-34R 12000) 

Tool TL-8S11 

(Y-708 00600) 

A

12. Reverse the right hand cone. 

13. Remove the ball retainer P 

(3/16"X13). 

14. Remove the driver unit. 

15. Remove the return spring A. 

Right hand cone 

(Y-34R 98080) 

Ball retainer P 

(Y-34R 98070) 

Driver unit 

(Y-35P 98070) 

Return spring A 

(Y-34R 21000) 

19

20 

16. Remove the clutch unit by 

turning it counterclockwise 

and aligning the two teeth 

to the two grooves, as 

shown. 

This completes the disassembly of 

the INTER-8 coaster hub. 

Clutch unit 

(Y-35P 98060)

Assembly of the INTER-8 coaster hub 

1. With the hub axle unit mounted 

in a vice, align the two 

teeth on the clutch unit with 

the two notches in the hub 

axle unit. Turn the clutch unit 

clockwise until it is in its final 

position as shown. 

Clutch unit 

(Y-35P 98060) 

2. Install the return spring with 

the largest coil downward. 

The spring should sit in the 

groove on the clutch unit, 

shown as a blue line in the 

picture. Be careful not to 

install the return spring A 

upside down. 

3. Assemble the driver unit by 

aligning the more shallow 

notch on the driver unit 

with the wider tooth on the 

clutch unit. Rotate the driver 

counterclockwise to hold the 

compressed spring in position. 

Clutch unit 

(Y-34R 98050) 

NOTE: 

During the assembly procedures 

coat all seals, gears and pawl 

assemblies with a thin coat of 

Nexus specific grease. Where 

indicated by blue grease icon, 

apply grease liberally. 

(Y-041020800) 

Return spring A 

(Y-34R 21000) 

Set drive unit 

while turn it 

counterclockwise. 

NOTE: 

Assemble the driver 

unit while pushing 

pawls B as shown in 

the picture. 

21

22 

4. Install the ball retainer P 

(3/16"X13). 

5. When installing the right hand 

cone, align the two serrations 

with the grooves in the axle, 

as shown. Set the cone installation 

tool (TL-8S20) and strike 

it until it comes to a stop. 

NOTE: 

Make sure the right hand cone is 

completely seated, as shown, and 

the seal is installed equally. 

6. Install the driver plate. Be 

careful of the setting direction 

as shown in the picture. 

Driver plate 

(Y-34R 12000) 

Ball retainer P 

(Y-34R 98070) 

(Y-041020800) 

Right hand cone 

(Y-34R 98080) 

seal seal 

ok 

Tool TL-8S20 

(Y-708 00200) 

ok

7. Install the lock washer. 

8. When installing the stop 

washer, align the two teeth 

with the two grooves of the 

lock washer. 

9. Install the right hand locknut 

with a 17mm hub spanner. 

NOTE: 

If either the lock washer or driver 

plate rotates during this step, 

return to assembly step 5 and 

make sure that the cone is correctly 

seated. 

10. Reverse the axle unit in the 

vice to complete assembly. 

Lock washer 

(Y-34R 98090) 

Stop washer 

(Y-34R 09000) 


25 - 30 N·m {218 - 261 in.lbs} 

Right hand locknut 

(Y-33Z 07020) 

(Y-041020800) 

23

24 

11. Install the ball retainer O 

(3/16“ X 26) while pushing 

pawls B one by one. 

Be careful not to displace 

pawls B on the driver unit. 

12. How to align the three 

planetary gears and install 

the ring gear. 

(Without any tools) 

Align the three marks, which are 

on the planetary gears, as shown 

in the picture. 

Tool TL-8S30 

(Y-708 00300) 

(With tool) 

Align the grooves of the tool with 

the marks on the planetary gears. 

The purpose of the tool is to fix 

the planetary gear's position. 

Now you can install the ring gear. 

Install the ring gear slide spring 

with a screwdriver. 

Ring gear 1 stop ring 

(Y-34R 80000) 

Carrier unit 

(Y-35P 98040) 

Ball retainer O 

(Y-34R 98030) 

(Y-041 20800) 

(Y-041 20800) 

(Y-041 20800) 

Pawls B 

Ring gear 1 

(Y-35P 11000)

13. Align the internal tooth on 

the ring gear and carrier unit 

with the groove in the hub 

axle unit. Install ring gear 

and carrier unit slowly. 

(Y-041020800) 

NOTE: 

Be careful to fit A to A and B to B 

of the driver unit and the hub 

axle unit as shown in the picture. 

Important: 

To set all four pawls in the correct 

position. 

Use a flat blade screwdriver to 

depress pawls, as shown, during 

assembly. Turn unit and check 

that all pawls are in the proper 

position. 

A 

B 

(Y-041 20600) 

Pawls 

B 

A 

25

26 

14. Insert the stop ring. 

NOTE: 

If there is no visible groove to 

receive the stop ring, it is likely 

that the ring gear and carrier unit 

are not properly assembled, 

return to assembly step 13. 

15. Install the brake shoe unit. 

16. Install the hub shell unit 

while turning it counterclockwise. 

17. Place ball retainer B onto the 

hub shell. 

Ball retainer B 

(Y-330 98110) 

(Y-041020800) 

Stop ring 

(Y-33Y 19000) 

(Y-041020800) 

Brake shoe unit 

(Y-35P 98020) 

Hub shell 

Internal assembly 

Note: 

Be careful of the setting 

direction. 

Apply a liberal coating of internal 

hub grease. 

Hub shell

18. Place the brake arm unit 

onto the hub axle and turn it 

to the left and right so that 

the serrations of the brake 

shoe and brake arm unit 

engage with each other. 

Then push the brake arm 

unit fully into the brake shoe 

unit. 

Note: 

Apply a liberal coating of internal 

hub grease to the inside and outside 

of the brake shoe unit. 

19. Screw the stop nut to adjust 

so that the hub shell can be 

turned smoothly without 

any play. After adjusting, 

secure the stop nut with the 

locknut. 

20. Install the dust cap. 

(Y-041020800) 

This completes the assembly of 

the INTER-8 coaster hub. 

Brake arm unit (Y-35P 98080) 

Brake shoe unit (Y-35 98020) 

(Y-041020800) 

TL-7S20 

Locknut 17mm (Y-35P 28000) 

ok 

Stop nut 22mm 

(Y-35P 22000) 

(Back side) 

Serrations 

27

28 


CJ-8S20 for 8 speed CJ-8S40 for 8 speed 

Measurement Tool 

TL-CJ10 for CJ-8S20 



101mm 

101mm 

127mm

Interchangeability 

Internal 

Unit 

CHAIN DRIVE 

* = possible, but not the same performance as orginal spec. 

Internal 

Unit 


standard 


Premium 


for CYBER NEXUS 

Mass production 

& replacement 


Replacement 

(8R20 type Ring gear 2) 



* = possible, but not the same performance as orginal spec. 

Internal 

Unit 

SG-8R20 SG-8R25 



standard 


Premium 




standard 

SG-8C45 


BELT DRIVE 

CHAIN DRIVE 


& replacement 


Replacement 





& replacement 


& replacement 

Red Line 

Hub Shell + Internal Unit 



Possible 

YES not recommended 

NO 

NO 

YES *1 

NO 

NO 

YES NO 

YES NO 

NO YES 

NO YES 




Possible 

YES not recommended 

NO 

NO 

YES *1 

NO 

NO 


SG-8C20 SG-8C45 

YES NO 

NO 

YES NO 

YES NO 

NO YES 

NO YES 

YES 

8R20 type 

Ring gear 2 

8R25/45 type 

Ring gear 2 

29

30 

NEXUS non-turn washers 

NEXUS non-turn washers 

5R/L 

6R/L 

7R/L 

For right 

hand side 

99º 

5R 

5R:Yellow 

6R 

6R:Silver 

77º 

110º 

7R 

For left 

hand side 

5L 

5L:Brown 

6L 

6L:White 

7L 

261º 

250º 

283º 

7R:Black 7L:Gray 

NEXUS non-turn washer application chart 

5R/L 

6R/L 

7R/L 

Reversed fork end 

5R 

5R 

5R 

6R 

6R 

6R 

5R 

6R 

7R 

7R 

7R 

7R 

Good 

Good 

NR 

5R 

5R 

5R 

5R 

6R 

6R 

6R 

6R 

7R 

7R 

7R 

7R 

20º 

Standard fork end 

Good 

NR 

Good 

5R 

5R 5R 

5R 

6R 6R 6R 

6R 

7R 

7R 7R 

7R 

38º 

NR 

NR 

Good 

NR: not recommend

Hub dimensions (Over Locknut Dimension and Axle) 

SPEC 

FOR REVERSED FORK 

END AND FULL 

CHAIN CASE 


END 

FOR STANDARD 

FORK END 

Specifications 

Speed 

Model No. 

Silent Clutch 

Gear Change Support Mechanism 

Shifting Power Modulator 

Driving Efficiency 

Brake 

Over Locknut Dim. / OLD (mm) 

Axle Length (mm) 

Gear Ratio 

MARKING 

5L 

6L 

7L 

Hub Shell Material 

Finish 

Weight 

Spoke Hole 

Spoke Size 

Flange Dist. (mm) 

Spoke Hole P.C.D (mm) 

Flange Diameter (mm) 

Flange Width (mm) 

Sprocket Teeth 

Sprocket Thickness (mm) 

Chain 

Chain Recommend 

Chain Line (mm) 16-23T 

Dishing Distance (mm) 

Shifting Lever / AI 

Cassette Joint / Motor Uni 

BC3/8 26 TPI 

6.4 

25.7 

NON TURN WASHER 

COLOR 

BROWN 

WHITE 

GRAY 

Function Name INTER-8 coaster 

Total 

1 

2 

3 

4 

5 

6 

7 

8 

66.15 

SPANNER W:22 

SPANNER W:17 

105.2 

58.3 

29.15 

2.55 

184 

132.3 26 

66.15 

C.L. 47.85 

C.L. 42.85 

29.15 

SPEC 

STANDARD 

(BOTH USE FOR #13, #14) 

8 


X 

X 

X 

Standard 

Coaster 

132.3 

184 

307% 

0.527 

0.644 

0.748 

0.851 

1 

1.223 

1.419 

1.615 

Aluminum 

Painted 

1,990g 

36H 

#13 / #14 

58.3 

92.6 

105.2 

3.2 

16T,18T,19T,20T,21T,22T,23T 

2.3 

1/2"X1/8" or 1/2"X3/32" 

CN-NX10 

42.85 / 47.85 

2.55 

SB-8S20 / ST-8S20 / SL-8S20 

CJ-8S20 / CJ-8S40 

X = available 

DRIVER CAP 

BC3/8 26 TPI 

6.4 

NON TURN WASHER 

SPEC 

MARKING 


END AND FULL 

5R 

CHAIN CASE 


6R 

END 

FOR STANDARD 

7R 

FORK END 

øX 

2.9 

JOINT NUT 

øY 

3.9 

COLOR 

YELLOW 

SILVER 

BLACK 

SURFACE TREATMENT 

OF HUB SHELL 

SILVER PAINTING 

31

32 

Spare parts list 

CJ-8S20 

1 

29 

25 26 27 28 

19 20 21 22 23 24 

Internal Assembly 

30 31 32 34 19 

ITEM 

NO. 

1 

2 

3 

4 

5 

6 

7 

8 

9 

10 

11 

12 

13 

14 

15 

16 

17 

18 

19 

20 

21 

22 

23 

24 

25 

26 

27 

28 

29 

30 

31 

32 

33 

34 

35 

36 

37 

38 

39 

40 

41 

2 3 

35 

36 37 

SHIMANO 

CODE NO. 

Y-35P 98010 

Y-35P 98020 

Y-33Y 19000 

Y-35P 98030 

Y-35P 98040 

Y-35P 11000 

Y-35P 12000 

Y-34R 98030 

Y-35P 98050 

Y-35P 98060 

Y-34R 21000 

Y-35P 98070 

Y-34R 98070 

Y-34R 98080 

Y-34R 12000 

Y-34R 98090 

Y-34R 09000 

Y-33Z 07020 

Y-314 14010 

Y-33M39510 

Y-33M39610 

Y-33M39710 

Y-35P 28000 

Y-35P 22000 

Y-35P 98080 

Y-330 98110 

Y-35J 11100 

Y-34R 98110 

Y-322 03220 

Y-322 03420 

Y-322 03520 

Y-322 03620 

Y-330 60000 

Y-330 60100 

Y-321 20100 

Y-74Y 98120 

Y-74Y 18000 

Y-74Y 98130 

Y-33Z 98020 

Y-74Y 98030 

Y-33Z 20500 

Y-33M39600 

Y-33M39700 

Y-33F 98090 

Y-33F 98100 

Y-75M06000 

Y-317 27200 

Y-708 00300 

Y-708 00200 

Y-708 00600 

Y-041020800 

4 

5 6 7 

DESCRIPTION 

SHIMANO NEXUS INTER-8 Coaster Hub 


Internal Assembly (Axle Length 184 mm) 

Brake Shoe Unit 

Stop Ring ( ø 9.6 mm) 

Ring Gear Unit 

Carrier Unit 

Ring Gear 1 

Ring Gear Slide Spring 

Ball Retainer O (3/16" x 26) 

Hub Axle Unit (Axle Length 184 mm) 

Clutch Unit 

Return Spring A 

Driver Unit 

Ball Retainer P (3/16" x 13) 

Right Hand Cone w/Seal 

Driver Plate 

Lock Washer 

Stop Washer 

Right Hand Lock Nut (3.4 mm) 

Cap Nut (3/8") 

Non-turn Washer 5L (Brown) 

Non-turn Washer 6L (White) 

Non-turn Washer 7L (Gray) 

Left Hand Lock Nut (3 mm) 

Stop Nut 

Brake Arm Unit 

Ball Retainer B (3/16" x 16) 

Hub Shell Slide Spring 

Right Hand Dust Cap A w/Seal 

Sprocket Wheel 16T (Silver) 






Snap Ring C 

CJ-8S20 Cassette Joint Unit 

Driver Cap 

CJ-8S20 Cassette Joint 

Cassette Joint Fixing Ring 

Inner Cable Fixing Bolt Unit 

Non-turn Washer 5R (Yellow) 

Non-turn Washer 6R (Silver) 

Non-turn Washer 7R (Black) 

Brake Arm Clip Unit (5/8") 

Brake Arm Clip Unit (3/4") 

Clip Screw (M6 x 16) 

Clip Nut 

TL-8S30 Carrier Unit Tool 

TL-8S20 Right Hand Cone Installation Tool 

TL-8S11 Right Hand Cone Removal Tool 

Internal Hub Grease (Net. 100g) 

1 

8 9 10 11 12 13 14 15 16 17 18 

33 

38 

39 

40 

41 

Internal Hub 

Grease 

(For coaster brake also) 

TL-8S30 

TL-8S20 

TL-8S11 

04 

PE-LD


SHIMANO NEXUS 8-speed Revo-Shift Lever 

SL-8S20 

ITEM 

NO. 

1 

2 

3 

4 

SHIMANO 

CODE NO. 

Y-6FD 98010 

Y-6F0 04000 

Y-61W98030 

Y-6F4 09000 

3 

DESCRIPTION 

Bracket Cover & Fixing Screw 

Cover Fixing Screw 

Cable Adjusting Bolt Unit 

Clamp Screw (M4 x 23.5) 

1 

2 

4 

33

34 


SHIMANO NEXUS Cassette Joint 

CJ-8S40 

Q'TY 

9 

ITEM 

NO. 

1 

2 

3 

4 

5 

6 

7 

8 

9 

SHIMANO 

CODE NO. 

Y-74Y 98160 

Y-74Y 27000 

Y-74Y 28000 

Y-74Y 30200 

Y-74Y 98140 

Y-33Z 98020 

Y-74Y 98150 

Y-74Y 18000 

Y-74Y 98030 

8 

7 

5 

DESCRIPTION 

CJ-8S40 

JAPAN 

Outer Casing Holder Unit 

Rubber Cover 

Outer Casing Holder 

Rubber Bellows 

Cassette Joint Unit 

Cassette Joint Fixing Ring 


Driver Cap 

Inner Cable Fixing Bolt Unit 

6 

4 

1 

3 

2


SHIMANO NEXUS Brake Lever 

BL-IM65 

Q'TY 

ITEM 

NO. 

1 

2 

3 

4 

5 

For Left Hand / 3-Finger 

5 

SHIMANO 

CODE NO. 

Y-8TS 98020 

Y-6JB 98040 

Y-89E 05010 

Y-8SB 10000 

Y-89M 08010 

DESCRIPTION 

4 3 

L.H. Adjustment Block & Screw 

Cable Adjusting Bolt (M10 x 19) & Nut 

Reach Adjusting Screw (M4 x 10.8) 

Clamp Bolt (M6 x 14.8) 

Grip (ø22.2 mm / Black) 

1 

2 

35

BJARNE EGEDESØ A/S 

Denmark, Iceland and Greenland 

Phone +45 63 16 8001 

Fax +45 63 16 8004 

BJARNE EGEDESØ BALTICS 

Estonia, Latvia and Lithuania 

Phone +371 7 29 3688 

Fax +371 7 31 2042 

COOLHEAT, S.A. LTD. 

South Africa 

Phone +27 11 807 5282 

Fax +27 11 807 2998 

EBSAT LASTIK VE YEDEK PARCA TIC. LTD. STI. 

Turkey 

Phone +90 232 483 13 87 

Fax +90 232 483 46 63 

EUROTRADE LTD. 

Balkans region (incl. Romania and Moldavia) 

Phone +30 2610 911450, 911451, 911452 

Fax +30 2610 911453 

ALBIMI N.T.P. 

Kosovo 

Phone +381 280 20305 

Fax +381 280 28540 

CS-EUROTRADE d.o.o. 

Slovenia and Croatia 

Phone +386 7 49 02 500 

Fax +386 7 49 02 549 

PLANET BIKE D.O.O. 

Serbia & Montenegro, Bosnia & Herzegovina, 

Macedonia 

Phone +381 11 3149 033 

Fax +381 11 3149 101 

ROMVELO S.R.L. 

Romania 

Phone +40 723 550 003 

Fax +40 723 550 020 

VELOMANIA LTD. 

Bulgaria 

Phone +3592 812 7060 

Fax +3592 812 7061 

FUCHS-MOVESA AG 

Switzerland 

Phone +41 56 464 46 46 

Fax +41 56 464 46 47 

HALLMAN SPORTS AB 

Sweden 

Phone +46 18 561 600 

Fax +46 18 500 395 

HALLMAN SPORTS AS 

Norway 

Phone +47 66778010 

Fax +47 66778011 

HALLMAN SPORTS OY 

Finland 

Phone +358 20 1550 800 

Fax +358 20 1550 801 

MACARIO LLORENTE, S.A. 

Spain 

Phone +34 91 329 5070 

Fax +34 91 329 2594 / 91 329 2039 

Specifications are subject to change 

for improvement without notice. 

MA34RA © February 2005 Shimano Inc. 

MADISON CYCLES PLC 

UK and Ireland 

Phone +44 208 385 3385 

Fax +44 208 385 3443 

M.I.C. MILAN INTERNATIONAL COMMERCE SpA 

Italy, Malta and Tunesia 

Phone +39 331 467 311 

Fax +39 331 464 790 

NIKOS MANIATOPOULOS S.A. 

Greece and Cyprus 

Phone +30 2610 993 045 

Fax +30 2610 990 424 

PAUL LANGE & CO. 

Germany 

Phone +49 711 2588 02 

Fax +49 711 2588 305 

PAUL LANGE OSTRAVA S.R.O. 

Czech Republic 

Phone +420 597 444 160 

Fax +042 597 444 150 

PAUL LANGE OSLANY S.R.O. 

Slovak Republic 

Phone +42 46 549 2344 

Fax +42 46 549 2350 

R & P PAWLAK 

Poland 

Phone +48 61 878 7335 

Fax +48 61 878 7266 

SABA DOCHARKH (CYCLE) CO. LTD. 

Iran 

Phone +98 21 878 0651-2 

Fax +98 21 878 7278 

SHIMANO BENELUX B.V. 

The Netherlands, Belgium and Luxembourg 

Phone +31 341 272 327 

Fax +31 341 272 291 

OOO SHIMANO EURASIA 

Russia and Belarus 

Phone/Fax +7 095 101 34 88 

SHIMANO FRANCE COMPOSANTS CYCLES 

France 

Phone +33 321 73 2525 

Fax +33 321 55 8427 

SOC. COMERCIAL DO VOUGA LDA. 

Portugal 

Phone +351 234 601 500 

Fax +351 234 601 159 

THALINGER-LANGE GMBH 

Austria 

Phone +43 7242 4970 

Fax +43 7242 4972 48 

VELOTRADE KFT. 

Hungary 

Phone +36 1 455 8000 

Fax +36 1 455 8019

SG-8C20 - Paul Lange & Co

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