Description
A worn or damaged mainshaft bearing compromises your clutch engagement and shifts your power delivery away from the track. The EASTERN MOTORCYCLE PARTS Mainshaft Ball Bearing (A-8978) is engineered for 5-speed transmissions to restore precise, consistent clutch actuation and eliminate play in the drivetrain. This is a direct replacement that demands precision—get it right the first time.
- Manufacturer Part Number: A-8978
- Application: 5-speed transmissions
- Position: Clutch side mainshaft
- Type: Ball bearing
- Material: Precision-grade steel
- Installation: Bolt-on replacement
- OEM-equivalent performance
