Our one-piece construction ensures that none of your effort goes to waste. A 13-tooth delta on all chainring pairs ensures precise shifting for any setup, as well as a less dramatic change in cadence during front shifts. * Crisp and accurate front shifts* One-piece construction for faster, smoother, more secure shifting* X-Range gearing technology gives you more range and a smoother gear progression, so you’re always in the right gear* SRAM Model ID: CR-FRC-KIT-D2