kit corona sram force direct mount 12sWe wanted lightness, stiffness, and durabilityand we got all three. Our one piece construction ensures none of your effort is wasted. A 13 tooth delta across all chainring pairs guarantees precise shifting for any setup, as well as a less dramatic cadence change during front shifts. And the technology weve integrated makes this our longest lasting chainring set ever. FEATURES Sharp and precise front shifting One piece construction for faster,