Derailleur Spares

Rear derailleurs have two pulleys. The top is called the guide pulley, the bottom is called the tension pulley. On 8, 9 and 10 speed derailleurs, these do vary, and one derailleur needs one of each type of pulley. The difference is mainly that the top one (the guide pulley) moves freely from side to side, by about a half millimetre, to allow the chain to self-align with the rear cassette sprockets.

Alligator Rear Derailleur Cable Adjuster

1754
!
Rear derailleur cable adjusters often need replacing as a result of bending or corrosion. Original Shimano replacements can often be in short supply, but these Alligator adjusters will do the job well.
M5 thread. Thread is 11mm long. Black anodized alloy adjuster, stainless steel spring. The spring is probably best not used so you have more adjustment range. It would be unlikely for the adjuster to lose its adjustment as a result of the missing spring as the casing endcap will also do the job of stopping it from turning on its own.

Giant FD Plate OCR/Defy

2809
!
Replacement front derailleur plate from Giant OCR road bikes. Includes attachment bolts.

Distance between attachment holes (centre to centre): 16mm. Bracket is curved where it attaches to the frame. It's designed for seat tube diameter of 34.9mm but looks like it would work OK on 31.8mm seat tubes also. Derailleur attachment slot is 20mm long and it its top is about 5mm below the top of the top attachment bolt hole. This sits lower than the TCR front derailleur plates as it is designed for compact cranks, with relatively small chainrings. Weight: 17g  (including attachment bolts).

Giant FD Plate TCR

85691
!

Braze-on adaptor for Giant TCR carbon frames.

Distance between attachment holes (centre to centre): 16mm. Bracket is curved where it attaches to the frame. Derailleur attachment slot is 20mm long and its top is in line with the top attachment bolt hole. Weight: 15g  (including attachment bolts).

Giant FD Plate Trinity Advanced

2363
!
Front derailleur mount for Giant Trinity carbon and Aero frames.

Distance between attachment bolt holes (centre to centre): 17.5mm. Bracket is flat where it attaches to the frame. Attaches to right side of seat tube, in front of the derailleur attachment arm. Derailleur attachment slot is 22mm long and its top is about level with the top of the upper attachment bolt hole. Bracket Height: 39.3mm. Weight (including attachment bolts): 18g.

Giant FD Plate Trinity Alliance

85695
!
Replacement front derailleur plate for Giant Trinity Alliance frames.

Distance between attachment bolt holes (centre to centre): 18mm. Bracket is flat where it attaches to the frame (attaches to the right side of seat tube, in front of where the derailleur attaches). Derailleur attachment slot is 18mm long, and its top is roughly in line with the centre of the upper attachment bolt hole. Bracket height: 34mm. Weight (including attachment bolts): 18g.

Shimano Braze-On Adaptor 31.8mm

2367
!
Shimano SM-AD11 front derailleur clamp to use braze-on front derailleur on frame without a braze-on front derailleur mount.

Weight: 30g.

Shimano Standard Pulley Set

90380
!
Replacement rear derailleur pulley set for most Shimano 10-speed, 9-speed and 8-speed rear derailleurs. One guide (top) pulley and one tension (lower) pulley.

11-tooth pulleys.

Shipping Weight: 32g.

Shimano Pulley Set - High Grade Grade & Tension Road/MTB

1741
!
TEMPORARILY UNAVAILABLE.
Replacement 11t pulley wheels for Shimano Ultegra, XT and Saint rear derailleurs (RD-6700, M772, M771, M770, M810, 6500, 6600, M750, M751, M760, M761, M800, M805, M801, M806, C910.
Shimano Part Number Y5X998080. One guide pulley (sealed ceramic bush) plus one tension pulley (sealed bearing).

Shimano RD-TY30 Pulley Set

1197
!

10-tooth pulley set for Shimano Tourney rear derailleurs. For 5/6/7/8 speed systems. Supplied as a pair of the same pulleys (no differentiation between guide pulley and tension pulley).

Shipping Weight: 27g.

SRAM Derailleur Pulleys for X0 10sp

90505
!

X0 level rear derailleur pulleys - sealed cartridge bearings, alloy side spacers. It's easy to put them in the right place as one of them says "lower pulley" and has a direction arrow. The other doesn't so you're allowed to put it on backwards.

From 2008 SRAM X0 10 speed rear derailleur. Weight: 26g.

SRAM X7 Pulley Set

1753
!
Suits 2010 X9 and X7 rear derailleurs.

SRAM Item Number 11.7515.038.000.

Shipping Weight: 46g.

Sunrace Derailleur Bracket with Nut

90317
!
This bracket allows the use of a direct-mount rear derailleur on a frame designed for an axle-mount rear derailleur.

The bracket attaches under the axle on a "horizontal" dropout; the derailleur screws into the bottom. 27mm offset centre to centre.

Weight: 34g.