In order to save the trouble of assembling the different items yourself, we've combined three components — power meter crank arms, a big ring, and a little ring — into the Quarq SRAM Red Power Meter GXP Crankset. The crank arms used here feature the updated, more subtle styling, so their aesthetic matches the rebranded, less-motorsport styling of the latest iteration of SRAM's flagship road drivetrain.
The result is a fashion-forward happy coupling of the sharp shifting of SRAM's X-Glide rings, the stiff, lightweight efficiency of Exogram Hollow carbon crank arms, and — of course — Quarq's industry-leading, ANT+ compatible power meter system. With a claimed accuracy of +/- 1.5% — 0.5% better than most meters on the market — the five strain gauges allocated strategically throughout the crank arms keep you informed while you're in the saddle, making this package the ultimate training partner.
In addition to that accuracy, the SRAM Exogram hollow carbon construction, and the usual power meter functionality, there are two key features worth calling out: Power Balance and the 10k active temperature compensation. Power Balance records the power you're generating in both crank arms separately, so you can compare the two and identify pedal stroke weaknesses to target for improvement. 10k is named after the 10,000 data points Quarq collected to establish a self-correcting schedule that accounts for temperature changes and minimize drift, which eliminates the need for occasional mid-race zeroings to let you focus on turning the cranks, not babysitting them.
The Red X-Glide Chainrings feature a stiffer chassis and realigned pin pattern that increases the number of engagement points. When the rings are used in conjunction with a SRAM Red YAW front derailleur, those improvements mean that the chain ramps up to the big ring with a speed bordering on personal injury. The unit is finished with standard power meter features: it measures cadence, is waterproof, and features an LED light power display. When this gets low, the battery can easily be replaced by any home mechanic. After a ride, the data's compatibility with myriad training software programs means you can upload it to Training Peaks, Golden Cheetah, and Strava.
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Reviews & Community
- Familiarity: I've put it through the wringer
I've been using one of these on my bike for over a year now and the only thing I've had to do is replace the battery. That takes all of 20 seconds to simply unscrew the cap, pop out the old battery and pop in the new one. The power meter always links up perfectly with my Garmin 1000 and has never had a single issue of giving me strange readings or dropping out in the middle of a ride. Very happy.