Rival 2x chainrings are a light, elegant one-piece construction so 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 shiftsX-Range gearing technology gives you more range and a smoother gear progression, so youâre always in the right gearOne-piece construction for faster, smoother, more secure shiftingCrisp and accurate front shiftsDirect Mount46/33TAlloyBlack/Silver12spStandardUPC/EAN/GTIN: 710845916595