Rear

Shimano 105 R7000 Series will empower more riders than ever before to embrace the sport of road cycling. It will become the supportive groupset that beginner riders choose to help them train for, and ride in more serious races. By combining trickle down t

Developed and designed entirely by CeramicSpeed, the Oversized Pulley Wheel (OSPW) System for Shimano 9000/6700 provides the ultimate optimization of your bicycle's drivetrain.

This OSPW System features a set of 17-tooth aluminium Pulley Wheels, availa

2400 Claris derailleurs feature an advanced light action for low-friction shifting up or down the block
Wide link design for increased rigidity and precise gear shifts
For use with triple setups
Compatible with 8-speed drivetrains
Max sprocket sizes:

It doesn't matter if you value a lightweight climbing bike or an aero speedster, drivetrain friction causes drag at any speed, and thus more watts if you want to go faster. And while it's harder to quantify frictional losses compared to say, aero data in

Direct mount
Rear capacity: 23T
Max front difference: 22T
Total capacity: 45T
Steel outer & inner links
Steel outer & inner plate cage
11T (bushing) guide pulley
11T (bushing) tension pulley
9 speed
Composite plate body
11-34T
11T tension pulle

Thanks to the new design of the parallelogram, the rear derailleur is now lighter and more rigid, with the most effective and fastest shifting.
The design is derived directly from the 11-speed components with the oversized outer plate to provide greater

Bringing constant refinement to the 11-speed XT drivetrain, the Shimano XT RD-M8000 Rear Derailleur offers improved chain retention when you're riding across jarring, rock-strewn trails. Benefiting from trickle-down technology from the XTR group, Shadow R

Ultegra Shadow design rear derailleur with wide link design gives quick accurate shifts and excellent drivetrain efficiency
Shadow Plus uses a chain stabilising switch that when on will reduce chain bounce in rough terrain maintaining more stable drive a

Developed and designed entirely by CeramicSpeed the Oversized Pulley Wheel System for Campagnolo is advanced for the optimization of bike performance. Everything from bearings to the cage is made from the highest quality materials. The oversized aluminium

Replaceable derailleur hanger / dropout 120 Black

Alloy extended link enables standard rear mechs to be used with wide ratio cassettes

same shapes of the Super Record one in order to obtain similar shifting performance
Low weight with high stiffness and great resistance to impacts.
Same system already used in Super Record derailleur.
Perfect alignment of the derailleur cage.
Better u