Compatible with Santa Cruz, Yeti, Alchemy, Santa Cruz Stigmata (without baseplate), Ibis Hakka MX, and more. <p> <li>Engineered, manufactured and assembled in Portland, Oregon USA </li><li>King Lifetime Warranty </li><li>Legendary made-in-house bearings </li><li>Patented GripLock® retention design for dependable headset adjustment (US Patent 8662517) </li><li>41mm 45x45 upper bearing </li><li>52mm 36x45 lower bearing </li><li>Compatible with the included baseplate and 36 degree integrated crown races</li></p>