700928 Primo Brute Iv Main Shaft Bearing

This replacement mainshaft bearing is specifically engineered for use with billet aluminum motor plates. It is a critical service part for riders running Primo Brute IV belt drive kits on their Harley-Davidson. High-performance primary drives place significant stress on the mainshaft, and maintaining a fresh bearing ensures smooth power transfer and prevents premature wear on the belt system. Constructed from durable bearing steel, this component provides the necessary support for the transmission mainshaft within the motor plate assembly. It is an essential hardware item for maintaining the longevity and reliability of aftermarket open primary setups, ensuring the rotating assembly remains properly aligned under heavy load.