KOYO Crankshaft Main Bearings are crafted to precise OEM standards using the highest quality materials. They perfectly fit both OEM and aftermarket crankshafts, ensuring optimal performance and longevity. Whether you're looking to maintain the reliability of your KTM, BETA, or SHERCO motorcycle or improve its performance, these crankshaft bearings offer exceptional durability and a perfect fit. With KOYO's renowned engineering, these bearings facilitate smooth operation and robust support for your engine's crankshaft. Choose KOYO for your motorcycle's needs and ride with confidence.