SRAM Quarq DFour91 Power Meter Crankset (Black) (GXP Spindle) (170mm) (110 Aymm... - 00.3018.192.170
SRAM Quarq DFour91 Power Meter Crankset (Black) (GXP Spindle) (170mm) (110 Aymm... - 00.3018.192.170, Quarq's power meter cranks continue to be reliable, accurate and easy to use. The Dfour91 model accepts Shimano Dura Ace 9100 and Ultegra R8000 road chainrings and offers more data transfer and frame fit compatibility. Features: DFour91 is compatible only with Dura Ace 9100 and Ultegra R8000 chainrings Measures power for both legs with +/_ 1.5% accuracy Dual Bluetooth lowenergy and ANT+ wireless data transfer AxCad system provides no-magnet cadence data Free firmware updates with the QALVIN APP Uses a CR2032 battery that can be replaced without tools Swap chainrings without needing to recalibrate Specs: Drivetrain Speeds 11 Number of Chainrings No Rings Included Chainline/Hub Compatibility 135/142 Road Disc Hubs < 415 mm Chainstay Crank Length (mm) 170mm, 172.5mm, 175mm Chainline/Hub Compatibility 130 Hubs Color Black Crank Intended Use Road Spindle Interface Type SRAM/Truvativ GXP Chainline/Hub Compatibility 135/142 Road Disc Hubs > 415 mm Chainstay BB Included No Defined Color Black Chainring BCD 110 Shimano Asymmetric Pedal Spindle 9/16"