The Wolf Tooth Elliptical 104 BCD chainring for Shimano 12-speed Hyperglide+ chain is designed to fit any 104 BCD crankset. The tooth profile was developed specifically for Shimano's XTR, XT, and SLX 12-speed Hyperglide+ chain. Its proprietary Powertrac design has an ovality of 10% and a timing of 112 degrees after top dead center, providing benefits such as greater rear wheel traction.