Leveraging the legendary history of SRAM shifting, the GX 2x10 rear derailleur provides incredible shifting speed and precision. EXACT ACTUATION(TM) technology eliminates slop and shifting variation. ROLLER BEARING CLUTCH(TM) technology delivers maximum drivetrain stability-even through the most punishing terrain. And with CAGE LOCK(TM) technology, wheel removal and installation are easier than ever. FEATURES a EXACT ACTUATION(TM) for precise and dependable 10-speed performance a TYPE 2.1 technologies: ROLLER BEARING CLUTCH(TM) and CAGE LOCK(TM) (also available without TYPE 2.1 configurations) a Cage lengths: Short, Medium and Long SPECIFICATIONS a CAGE (RD) Long, Medium, Short a CABLE PULL RATIO Exact actuation a SPEED (RD) 10s a COLOR (RD) Black a CAGE MATERIAL (RD) Aluminum a PULLEY BEARINGS MATERIAL Steel a MAX TOOTH 36 a WEIGHT (G) 302 a WEIGHT BASED ON RD 2x10 Long Cage Black