Sram XX1 Type 2.1 11 Speed Rear Derailleur
Sram's top of the line XX1 rear derailleur rethinks how derailleurs function. With X Actuation and X Horizon, the XX1 rear derailleur out performs other shifting systems. The X-Horizon derailleur knuckle only moves side-to-side — not up-and-down. This limits the movement to the horizontal axis, making ghost shifting nonexistent. Also, the derailleur upper pulley is offset, which provides a constant chain gap through all of the gear ratios. With the combined efforts of the X-sync chainring, pulley wheels, and a Roller Bearing Clutch, a chain guide isn't needed with XX1 drivetrain. Your chain is tensioned with the derailleur and locked in place with the pulleys and chainring. Combining the Roller Bearing Clutch and parallelogram design means that you'll never get chain slap. The derailleur is also made to withstand repeated hits while you're navigating through a rock garden in order to eliminate the chance of throwing the chain. The XX1 derailleur also comes equipped with the lock out button, allowing you to take out your rear wheel with ease.
Sram's XX1 rear derailleur can only work with 1x11 set up with, with sram's 11 speed shifter and cassette.
Warranty - 2 years
Weight - 220g
Max Front Chainring - 32t
Cage Length - Long