Front Derailleurs

Selecting front derailleurs can be a bit complicated. Relevant factors are number of chainwheels, seat tube diameter, direction of cable pull, large chainwheel size and chain line.

Chain Deflector 28.6mm

73190
!
Attach this to your seat tube so it guides the chain onto the small ring and prevents overshift. Simple: no more dropped chains!
Weight: 11g.

Chain Deflector 34.9mm

73192
!
Attach this to your seat tube so it guides the chain onto the small ring and prevents overshift. Simple: no more dropped chains!
Weight: 11g.

Giant Front Derailleur 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 Front Derailleur 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 Front Derailleur Plate TCR Advanced

85696
!
The Giant Road Front Derailleur Plate suits TCR Advanced 2009-11, Defy/Avail Advanced 2009-11, TCR Composite 2011, Defy/Avail Alliance 2010.

Distance between attachment bolts (centre to centre): 16mm. Bracket is straight where it attaches to the frame (attaches on the right side of the seat tube). Derailleur attachment slot is 20mm long and its top is roughly in line with the top of the top of the upper attachment bolt hole. Bracket overall height: 32.2mm. Attachment bolts included. Weight (including attachment bolts): 13g.

Giant Front Derailleur Plate TCR Advanced SL

0485
!
Replacement front derailleur plate for Giant TCR Advanced SL from 2009.

Distance between attachment bolt holes (centre to centre): 16mm. Bracket is curved where it attaches to the frame. Derailleur attachment slot is 18mm long and its top is about in line with the bottom of the top attachment bolt hole. Height of plate: 34mm. Weight (including bolts): 16g.

Giant Front Derailleur 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 Front Derailleur Plate Trinity Advanced SL

0507
!
Front derailleur mount for all Giant Trinity Advanced models.

Distance between holes (centre to centre): 16mm. Bracket is flat where it attaches to the frame. Attaches to the right side of the seat tube (behind the derailleur attachment arm). Derailleur attachment slot is 20mm long and its top is roughly in line with the centre of the upper attachment bolt hole. Overall bracket height: 36.2mm. Weight: 15g.

Giant Front Derailleur 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 Braze-On Adaptor 34.9mm

2653
!
Shimano SM-AD15 front derailleur clamp to use braze-on front derailleur on a frame without a braze-on front derailleur mount.
Weight: 30g.

Shimano FD-M371 Altus Hi-Clamp Front Derailleur 63-66 degrees

0704
!
Economical front derailleur for 9-speed drivetrains with triple cranksets. This derailleur is designed for chainstay to seat tube angles around 63 to 66 degrees.

Fits seat tube diameters 28.6mm, 31.8mm & 34.9mm. Top or bottom cable pull.

Shipping Weight: 301g.

Shimano FD-M371 Altus Hi-Clamp Front Derailleur 66-69 degree

0705
!
Economical front derailleur for 9-speed drivetrains with triple cranksets. This derailleur is designed for chainstay to seat tube angles around 66 to 69 degrees.

Fits seat tube diameters 28.6mm, 31.8mm & 34.9mm. Top or bottom cable pull.

Shipping Weight: 303g.

Shimano FD-M590 Deore 9x3 Low Clamp Front Derailleur

1466
!

Shimano Deore triple front derailleur for 9-speed drivetrains.

Shipping Weight: 270g.

Shimano FD-M780 XT 10x3 Low Clamp Front Derailleur

0495
!
Shimano Deore XT Dyna-Sys 3x10 top-swing front derailleur. Low clamp mounting style. Top or down pull.
Weight: 151g. Shipping Weight: 495g.

Shimano FD-M781-D XT 10x3 Direct Mount Front Derailleur Black

1517
!
Dyna-sys 3x10 front derailleur. Down-swing construction. Shimano direct mounting style. Top or down pull.
Weight: 138g. Shipping Weight: 250g.

Shimano FD-M785 XT 10x2 Low Clamp Front Derailleur

1040
!
Dyna-Sys 2x10 front derailleur.

Top swing; low clamp; top or down pull. Suits 28.6/31.8/34.9mm seat tube diameters.

Shipping Weight: 260g.