Rival XPLR E1 Crank Arm Assy Headsets and the bike you have

and the bike you have always wanted to build

User replaceable AAA lithium battery

Other elastomers available

improves drivetrain compatibility

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Rival XPLR E1 Crank Arm Assy Headsets and the bike you haveCareful 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 DUB Wide bottom bracket adds durability and simplicity Aluminum arms optimized for stiffness and light weight SRAM Model ID FC RIV ASSY E1 Attributes BCD Direct Mount SRAM 8 Bolt Interface DUB Position Set Primary Color Black