Sram CrankSet Rival GXP 172.5 XSYNC 1X11 SpeedFeatures Forged aluminum with a detachable spider. X SYNC tall, square tooth design provides maximum chain control, and the sharp, narrow tooth profile and rounded chamfer edges help manage a deflected chain. Mud clearing recesses for the inner chain links and rollers. Compatible with 130 mm & 135 mm rears. Specification Chainring format : Single BCD: 110 BCD Length: 170, 172. 5mm Material: Aluminium Weight: 799gms Compatibility: 1x11 Speed Bottom
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