SRAM 46/33T DM RED E1 BK/SLSram`s lightest, stiffest and most durable chainring One piece construction for faster, smoother, more secure shifting X Range gearing technology gives you more range and a smoother gear progression, so youre always in the right gear 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