Quarq DFour91 Power Meter Alloy Crank Arms - GXP

It can be frustrating getting on the bike in the spring, having spent countless hours spinning away staring at a screen through the winter, only to find that your pre-season goals didn't truly equip you for the riding ahead. While you could throw in a few different exercises, turn up the resistance on your trainer, and integrate weights to your workout, truly finding the areas where you can grow as a cyclists is near impossible without cold, hard data. Quarq has long been a leader in the world of power meters, which means that while packed with all of the bells and whistles you could need, the cranks were also expensive, but the DFour91 Power Meter Alloy Crank Arms changes all of that, packing in a robust alloy construction, plus all of the data you'd find in the pricier carbon version. With the exception of the difference in compatibility, the DFour91 includes all of the technology of the DZero and DFour packed into its spider, most importantly the power meter itself. The power meter saw some hefty reworking, with Quarq claiming 150 documented improvements, asserting leaps and bounds of advancement above previous models, with the most significant enhancements made to the strain gauges and measurement circuitry in the heart of the meter. All this is followed up with a new forged alloy build that drops the price, while keeping your setup reliable through challenging conditions. As in previous models, the DFour91 incorporates five meticulously placed strain gauges throughout the spider, designed to measure how many Newton Meters you're putting out when you hammer on the pedals. And it still incorporates the same level of claimed accuracy at +/- 1. 5%, keeping it 0. 5% more accurate than most meters. One of our favorite features, though, is that the new design doesn't require as much correction in order to maintain accuracy through massive temperature ranges, allowing things to work smoother when the mercury drops. This means that the DFour91, like the DFour, is be...