SRAM Rival Crankset - 170mm 12-Speed 48/35t 8-Bolt Direct Mount DUB Spindle BLK E1SRAM Rival Crankset 170mm 12 Speed 48 35t 8 Bolt Direct Mount DUB Spindle Black E1. SRAMs most advanced aluminum road crankset is their most stunning. Careful engineering has resulted in crankarms that optimize stiffness to weight ratio with material only where its needed. Integrated chainrings deliver flawless shifting in ranges that fit your needs with the whole package coming in over 50 grams lighter than the previous generation. Modern aluminum