Description
A worn mainshaft bearing compromises your engine’s reliability and performance, leading to excessive vibration, noise, and potential catastrophic failure. The EASTERN MOTORCYCLE PARTS Bearing A-9063 is a direct OEM-specification replacement that restores precise shaft alignment and eliminates play in your drivetrain. This is essential maintenance for any 5-speed Big Twin that’s seen serious mileage or hard riding.
Upgrading to a fresh bearing ensures smooth power delivery, reduces mechanical noise, and prevents secondary damage to adjacent components. Installation is straightforward for anyone comfortable with basic engine work, making this a cost-effective way to extend your motor’s lifespan.
- Fits: 5-speed Big Twins
- Part Number: A-9063
- Type: Mainshaft bearing
- Material: Precision steel
- Installation: Bolt-on replacement
- OEM equivalent: Yes
- Reduces: Shaft play, vibration
