SRAM, Rival E1 Crank Arm Assembly, Crank Arm, 170mm, DUB, BCD: Direct Mount SRAM 8 Bolt, Black

Careful engineering has resulted in crankarms that optimize stiffness to weight ratio, with material only where it’s needed. • 8-bolt interface compatible with power and non-power AXS spiders and integrated chainrings • DUB bottom bracket adds durability and simplicity • Aluminum arms optimized for stiffness and light weight • SRAM Model ID FC-RIV-ASSY-E1