Lengths: 170, 172.5 or 175mm
Chainrings: 39 X 53
Weight: 850 g.

Poised to dominate, the Sram Rival Compact GXP transfers your power to the pavement using a lightweight, extremely stiff, integrated spider design forged from one piece 7050-TV alloy. Utilizing Open Core Technology (OCT), the crank arms are hollow-forged out of AL-6066 alloy for maximum strength. OCT construction is stronger and lighter than standard solid-core alloy cranks. Professional-grade, TNT hard-finished PowerGlide chainrings offer durability for the most ardent of riders. OpenGlide tooth ramping allows faster chain transition between cog positions. Sram's GXP bottom bracket has been designed to increase power transfer and rigidity while reducing component wear, and accommodates a variation in bottom bracket shell alignment to maintain precision and performance regardless of thread and construction irregularities. Drive-side spindle. Alloy chainring bolts.