SRAM Rival 1 AXS Wide Power Meter Crankset - 165mm 12-Speed 40t 8-Bolt Direct Mount DUB Spindle Interface Black D1. Power every ride with the SRAM Rival AXS Wide Power Meter Crankset. We’ve taken the reliability elegance and features of Quarq’s legendary crank-based power meter and dropped the barrier to entry. This power meter platform is entirely contained within the DUB spindle for clean integration that fits more bikes than ever. Wide chainline crankset for bikes with the widest gravel tires DUB-PWR spindle-based unit measures left side power to calculate total watts An elegant integrated design Proven Quarq reliability and accuracy Long battery life (400+ hours) to power a season of rides User replaceable lithium AAA battery DUB bottom bracket (sold separately) adds durability and simplicity Waterproof (IPX7 waterproof to 1 meter for 30 mins)Lightweight (less than 40g heavier than standard crankset)