The clock is ruthless, it never stops trying to bury you into pack fill. Having the perfect spread of useable gears, into every sprint, out of every corner, and for those three race-winning pedal strokes after scrubbing the final gap, is what SRAM's X01 DH Rear Derailleur is all about. SRAM's X01 DH Rear Derailleur maintains a consistent chain gap across all 7 gears, enabling you to shift through the most demanding downhill courses with ease. An aluminum outer cage and stainless steel hardware provide durability while maintaining a low weight, while SRAM's X-Horizon straight parallelogram technology eliminates all vertical movement, speeding up shifts, reducing shift force, and nearly eliminating ghost shifting. Chain slap and bounce are also reduced, thanks to the roller bearing clutch.