Rival 1 Crankset Size:172.5mm semi-rigid orthotic arch support insole

semi-rigid orthotic arch support insole that is designed specifically for your arch type

Thin enough to use on the narrowest of adjusting cones

Yonex’s first ever hybrid string combo

Two-way zip closure at main compartment

Lighter shifting operation

Rival 1 Crankset Size:172.5mm semi-rigid orthotic arch support insoleWith one by drivetrains firmly established as a viable option in the mountain and cyclocross realms, SRAM is now in the process of expanding the one by paradigm to the road with its Rival 1 group. The Rival 1 GXP Crankset sits at the center of the group to guide the chain through the pedal stroke with perfect lines and outstanding chain retention.