SRAM Rival Crank Arm Assembly - 165mm 12/13-Speed 8-Bolt Direct Mount DUB Spindle BLK E1 CheckoutTitle=RaceFace ERA Direct Mount Chainring - 32t as well as for racing

as well as for racing skiers

Material:  6061 aluminum

Does not include top cap

and greatly improves glide in both downhills and in double poling

SRAM Rival Crank Arm Assembly - 165mm 12/13-Speed 8-Bolt Direct Mount DUB Spindle BLK E1 CheckoutTitle=RaceFace ERA Direct Mount Chainring - 32t as well as for racingSRAM Rival Crank Arm Assembly 165mm 12 13 Speed 8 Bolt Direct Mount DUB Spindle Black E1. SRAM has taken aluminum to another level. Careful engineering has resulted in crankarms that optimize stiffness to weight ratio with material only where its needed8 bolt interface compatible with power and non power AXS spiders and integrated chainrings (Chainring and spider sold separately) DUB bottom bracket adds durability and simplicity (Bottom bracket sold