The high-quality crankshaft bearings and seals are manufactured according to exact OEM specifications from the highest quality materials and provide maximum performance and quality. Ensure smooth operation and longevity for your YAMAHA or GASGAS motorcycle engine with these premium PROX crankshaft bearings. These bearings are meticulously produced to meet the stringent requirements set by original equipment manufacturers, guaranteeing exceptional durability and reliability. The package includes crankshaft bearings engineered to withstand extreme conditions and high RPMs, making them ideal for both recreational and competitive use. Whether you're maintaining or upgrading your bike, trust PROX to deliver superior products that keep your engine running at its best.