The SRAM Quarq AXS Aero Power Meter Kit makes use SRAM's new X-Range gearing technology, offering smoother shifting and a wider gear range. The rings are combined with an integrated Quarq Dzero power meter that provides accurate power measurement. Unique one-piece chainring design features a built in Quarq Dzero Power MeterPower meter is accurate within +/- 1.5% and balances power between left and right leg separatelyX-Range gearing provides more range and smoother gear progression, so you're always in the right gear8-bolt direct mount interface - only compatible with SRAM Red D1 and Force D1 cranksUsing a unique one-piece design that bolts straight to the crank arms, the X-Range rings work in conjunction with the X-Range XG-1290 and XG-1270 cassettes to provide a wider gear range and smoother progression between gears, meaning you'll always be in the right gear. The unique 10t start of the cassettes means you can use smaller chainrings than normal while retaining a similar gear for to