Description
The PROX Upper Rod Bearing is engineered for high-revving engines where piston rod articulation demands precision needle bearing surfaces. Failing or worn rod bearings compromise engine reliability and can lead to catastrophic internal damage—this OEM-quality replacement restores proper load distribution and reduces friction at the critical piston-rod interface. Choose PROX for proven durability in competitive and street applications.
- Bore diameter: 20 mm
- Outer diameter: 24 mm
- Width: 22.8 mm
- Type: Needle cage bearing
- Position: Upper rod-end
- MPN: 21.5503
- Material: Hardened steel races
- Application: High-performance piston rods









