When the BB30 compatible SRAM Red 22 Power Meter Crankset Package initially ships from Quarq, it's just the crank arms with no chainrings attached. While having the option to customize gear ratios is nice, there really aren't that many options to choose from. With this package, we've taken the liberty of assembling a standard or compact chainring set Red X Glide, of course no component slop here to accompany the Red 22 Power Meter crank arms. Though we've done the work of choosing which model of rings to include, you'll have to do the real work of spinning them out on the road. With a claimed accuracy of 1. 5% 0. 5% better than most meters on the market the crankset's complement of five strain gauges will keep you informed of exactly how much work you're doing. It also communicates those numbers via ANT wireless, so your current head unit is likely already compatible with it. 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 stiffer chassis and a 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 LE...