Red E1 2x Chainring KitOur lightest, stiffest, and most durable chainring. 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. And the technology weve packed in makes this our longest lasting chainring set ever. Crisp and accurate front shifts One piece construction for faster, smoother, more secure shifting