Rival Crank Arm Assembly E1 Crank Length (mm):172.5 like best-in-class efficiency and light

like best-in-class efficiency and light weight

Need a hat for The Great Nearby

Merino wool and moisture-wicking recycled polyester blend

or wrench to operate

Rival Crank Arm Assembly E1 Crank Length (mm):172.5 like best-in-class efficiency and lightSRAM 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