Rival Crank Arm Assembly E1 Crank Length (mm):172.5 12x142mm spacing hub

12x142mm spacing hub

these shoes give you maximum grip on any terrain and help you tackle the toughest trails

like best-in-class efficiency and light weight

Air spring adjust for preload

Rival Crank Arm Assembly E1 Crank Length (mm):172.5 12x142mm spacing hubSRAM has taken aluminum to another level. Careful engineering has resulted in crankarms that optimize stiffness to weight ratio, with material only where its needed 8 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 separately) Aluminum arms optimized for stiffness and light weight