KOYO Crankshaft Main Bearings are meticulously crafted under strict OEM standards using the highest quality materials. They are designed to fit perfectly with both OEM and aftermarket crankshafts, ensuring optimal performance and durability. Backed by KOYO’s engineering excellence, these bearings promise reliability and longevity, catering to high-performance needs. The model 6328/C3 with an 8-ball design offers superior load capacity, making it ideal for demanding applications in HONDA, KAWASAKI, and YAMAHA motorcycles. Whether you are upgrading or repairing, KOYO’s crankshaft bearings provide a precise fit and robust function to keep your engine running smoothly.