Buy now. Pay later on Quarq Sram Red GXP Powermeter Chainset. Quarq Sram Red GXP Powermeter Chainset: The SRAM RED Quarq power meter is a lighter, more accurate power meter completely integrated with the philosophy & performance of SRAM RED groupset. The RED power meter features Power Balance & Omni Cal & comes equipped with SRAMs X-Glide R chainrings. The sleek new geometry reduces system weight & delivers clearance for oversized frames & aerodynamic chainrings. The only visible power component is the low profile, all aluminum battery case. New stress flow lifts accuracy to +/- 1.5% & makes power measurement independent from chainring selection. Integrated electronics minimize interconnections & reduce exposure to the elements, bringing unmatched durability & reliability. The Installation & operation is a breeze with the LED that signals power on & set zero, clearly visible ANT+TM ID & tool-less, user-replaceable CR2032 battery. Power Balance Power Balance uses crankset torque to display the ratio of power generated in the right drive stroke (first half, 0-180&176;) versus the left drive stroke (second half, 181-360&176;) for each crank revolution. Power Balance is used by sports scientists to test asymmetry & is an excellent aid for injury recovery. Omnical Power measurement is independent from chainring selection. Swap chainrings without impacting accuracy. No recalibration necessary. X-Glide R Chainrings The chainrings are designed for an optimized shifting performance with the Yaw front derailleur. The stiffer rings (5mm 7075-T6 aluminum CNC-machined) feature upshift rivets with an advanced design adopted from SRAM XX. CNC machining allows for precision control of each tooth shape, ramp, & nearly every shifting feature of the chainring. Chainrings, chain, & front derailleur are designed as a single integrated system for optimized performance. Paired with SRAMs RED groupset, the RED power meter gives you the professionals tool set; everything you need to win at any event anywhere in the world. ANT+TM ID is clearly visible to aid pairing LED indicator signals power on & set zero Replaceable battery is a cycling industry standard CR2032 Power Balance: Uses crankset torque to display the ratio of power generated in the right drive stroke (first half) versus the left drive stroke (second half) for each crank revolution Omnical: Power measurement is independent from chainring selection. Swap chainrings without impacting accuracy +/- 1.5% accuracy Compatible with: ANT+ compatible head units including Garmin Edge&174; 810, 800, 510 & 500, & Garmin Forerunner&174; 910XT (available separately) Arm
Material: Carbon arms Chainring
Material: Machined alloy spider & rings Weight: 778g (GXP 172.5mm 53x 39 BB not included) Bottom Bracket Not Included