"The SRAM Rival AXS power meter upgrade adds power measurement to an existing AXS bike with just a left crank arm and spindle, so the right arm, bottom bracket, spider, and chainrings all stay exactly as they are. Quarq's spindle-based DUB-PWR unit measures left-side power and calculates total wattage from it, a proven method rather than a stripped-down compromise. It adds less than 40 grams over a standard crankset, keeping the upgrade close to invisible on the bike. What Our Gearhead® Experts Are Saying:""I've trained off these numbers for a full season and never once second-guessed them against a lab test or a friend's dual-sided setup. Left-side power from Quarq reads as real data, not an estimate I have to mentally discount."""
Price: $249.85 from Backcountry
| Merchant | Price | |
|---|---|---|
| $249.85 | Visit Store |
"The SRAM Rival AXS power meter upgrade adds power measurement to an existing AXS bike with just a left crank arm and spindle, so the right arm, bottom bracket, spider, and chainrings all stay exactly as they are. Quarq's spindle-based DUB-PWR unit measures...
The SRAM Apex DUB Left Crank Arm and Power Meter is a DUB-PWR spindle-based left-side power meter that provides accurate wattage to help our road cycling performance. This 12-speed crank delivers +/- 1. 5% proven Quarq accuracy, a superior battery life...
Becoming the best rider we can be starts with our training, but the technology from a tool like the SRAM RED AXS Power Meter Spider DUB Crankset helps us along the way. This high-performance crankset features an integrated power meter that measures our...