Namura Needle Bearing - 16x21x19.5

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Namura Needle Bearings are high-performance top-end piston bearings engineered to handle high RPM and heavy engine loads. Commonly used in motorcycles, ATVs, and snowmobiles, they are manufactured from durable SCM415 chromoly steel and feature a silver-plated cage for improved heat resistance and reduced friction. Features: SCM415 chromoly steel construction. Carbon nitriding treatment improves fatigue strength while enhancing heat dissipation. Copper-coated and silver-plated to reduce friction and help prevent seizure under extreme conditions. Specifically built for top-end piston and wrist pin applications in high-stress, high-RPM engines. Show more