quarq powermeter kit dm red axs d1 aero including chainring black

Features:Axs™ enabled for easy monitoring and firmware upgradesSingle-ring drivetrain simplifies functionalityFully integrated power meter into a direct mount aero chainringPower readings are accurate within +/-1.5% and aren’t affected by climate conditions during a ridePower balance measures left and right legs separatelySram x-sync™ wide-tooth, narrow-tooth chainring technology provides maximum chain controlLaser-etched chainring finish is more durable8-bolt direct mount compatibility only to new red® and force etap axs™ cranks.Specifications:Speeds: 12Crank arm length:n/aBB compatibility: n/aChainring size: 48, 50Bolt circle diameter (bcd): direct mount (dm)Chainline:n/aBB spindle interface:n/aChainring material: aluminumGuard: n/aCrank arm material: n/aColor (crank arm): n/aPower meter type: ant usb