* 12 speed Chorus rear derailleur* Alloy outer cage and parallelogram with carbon fibre-reinforced technopolymer body * Compatible with 11-29 to 11-34 cassettes, allowing to explore more varied terrains* 3D Embrace technology increases chain wrap by keeping the pulleys as close as possible to the cogs vertically and horizontally, which improves shifting speed and drivetrain longevity* 12 tooth jockey wheels reduce friction* Compatible with direct-mount frames* Improved performance on unpaved roads: additional spring in the upper body absorbs vibrations and reduces chain slap* Weight: 220g