Rival 1x XPLR 12/13-Speed Wide Crank Arm Assembly E1 Crank Length (mm):165 11% Spandex - OTHER: Knit

11% Spandex - OTHER: Knit 100% Polyester

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These direct mount chainrings coincide perfectly with the Comet Modular Crank

A 4mm FlatStop bead hook minimizes pinch flats

Rival 1x XPLR 12/13-Speed Wide Crank Arm Assembly E1 Crank Length (mm):165 11% Spandex - OTHER: KnitSRAM 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 150mm Q factor 47. 5mm