SRAM X0 D1 DUB-PWR Power Meter Upgrade – Left Arm + Spindle

Add precise, Quarq-powered watt data to your X0 Eagle drivetrain without adding bulk. This SRAM X0 D1 DUB-PWR Power Meter Upgrade replaces your existing left crank arm and spindle, hiding a ±3 % accurate power sensor inside the DUB spindle for a sleek, lightweight solution that’s fully compatible with RockShox Flight Attendant. With more than 400 hours of battery life from a single AAA lithium cell and a wide 55 mm chainline for Boost+/SuperBoost frames, it delivers season-long reliability and seamless ANT+/Bluetooth connectivity in one of the lightest alloy crank platforms available.

Key Features

• DUB-PWR spindle: Quarq power meter integrated inside the spindle – clean looks, low weight
• Left-side measurement (calculates total power) with ±3 % accuracy
• Lightweight forged-alloy X0 arm; adds < 40 g over a standard spindle
• 400 + hour battery life (user-replaceable AAA lithium)
• Fully sealed, IPX7 waterproof (1 m, 30 min)
• Works with any SRAM 8-bolt direct-mount chainring (sold separately)
• Q-factor 174 mm, 55 mm chainline – fits Boost+/SuperBoost & T-Type Transmission setups
• ANT+ & Bluetooth LE for head-unit pairing and SRAM AXS app integration
• RockShox Flight Attendant compatible for complete AXS connectivity