SRAM Apex AXS Wide Left Crank Arm Power Meter Spindle Assembly - 172.5mm 12-Speed DUB Spindle Interface BLK D1 Touchscreen-Yes Alloy backing plate is 50%

Alloy backing plate is 50% lighter than steel backing plate

Aero design extends to the shape of the indexed four-position quick release

Axle Type 12mm TA Freehub Body SRAM XD-R Position Rear Hub Drilling 24H Hub Spacing 142mm Hub Spoke Type J-bend Hub Weight 223g Primary Color Silver Rotor Mount Center Lock

Three-Pack fork leg accessory mounts dynamo routing adjustable axle-to-crown and rake adjustment allow the fork to be adapted to your outing

CNC machined aluminum cups and race

SRAM Apex AXS Wide Left Crank Arm Power Meter Spindle Assembly - 172.5mm 12-Speed DUB Spindle Interface BLK D1 Touchscreen-Yes Alloy backing plate is 50%SRAM Apex AXS Wide Left Crank Arm and Power Meter Spindle Assembly 172. 5mm 12 Speed DUB Spindle Interface Black D1. Accurate reliable power measurement is practically a requirement these days and the Apex AXS crankarm power meter upgrade is the easiest way to get precise power numbers. With the tech hidden inside the DUB spindle it fits almost any bike while remaining stealthy. DUB PWR spindle based unit measures left side power to calculate total