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

12x142mm spacing hub

Melonite QPQ high strength steel shaft for increased durability

Merino wool and moisture-wicking recycled polyester blend

Air spring adjust for preload

Sskratch Labs unsweetened Hydration Everyday Drink Mix is made with electrolytes and a squeeze of real fruit

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