Power every ride. We’ve taken the reliability, elegance and features of Quarq’s legendary crank-based power meter and dropped the barrier to entry once again. This new power meter platform is entirely contained within the DUB spindle for clean integration that fits more bikes than ever. It’s invisible technology that adds minimal weight and will help you get to the finish line faster, and can be used to upgrade any eTap AXS bike to power. FEATURES: An elegant integrated design DUB-PWR spindle-based unit measures left side power to calculate total watts Proven Quarq reliability and accuracy Long battery life (400+ hours) to power a season of rides User replaceable lithium AAA battery DUB bottom bracket adds durability and simplicity Waterproof (IPX7 waterproof to 1 meter for 30 mins) Lightweight (less than 40g heavier than standard crankset) Simple and affordable power meter upgrade option SPECS: Crank arm length: 172.5mm BB Compatibility: All SRAM Road DUB BBs, except Ai Chainring Size: No rings Bolt Circle Diameter (BCD): Direct Mount (DM) Chainline: n/a BB Spindle Interface: DUB Chainring material: No rings Guard: No Guard Crank arm material: Aluminum Color (Crank arm): Black Power Meter Type: Spindle