SRAM GX Rear Derailleur - 10 Speed, Short Cage, Black 10-Speed Tightly packed center knobs are

Tightly packed center knobs are ramped for rolling efficiency

Its proprietary design has an ovality of 10% and a timing of 112 degrees after top dead center which provide the beneifits of an oval ring such as greater rear wheel traction without the traditional downsides of oval rings

Cold air don't care

the Spell provides all day comfort with a 3D Prime ankle strap keeping you locked in so you can focus on progression

*IMPORTANT SIZING INFORMATION:

SRAM GX Rear Derailleur - 10 Speed, Short Cage, Black 10-Speed Tightly packed center knobs areSRAM GX Rear Derailleur 10 Speed, Short Cage, Black SRAM GX rear derailleur takes the place of X. 9 and X. 7 10 speed models and provides shifting speed and precision. Exact Actuation technology eliminates slop and shifting variation Roller Bearing Clutch delivers maximum drivetrain stability even through the most punishing terrain