Overview
The HPI Racing 4x8x3mm Ball Bearings (2-Pack) are genuine factory replacement ball bearings designed for smooth, low-friction rotation in HPI RC drivetrains, wheel hubs, and gearboxes.
Bearings are wear items — keeping spares on hand restores drivetrain efficiency and helps protect shafts and gears from premature wear.
Key Features
- Genuine HPI Racing replacement bearings
- Precision-ground steel races
- Standard cylindrical outer race
- Sealed/shielded against dirt
- Sold as a 2-piece set
Performance Benefits
- Reduces drivetrain drag
- Improves runtime and efficiency
- Protects shafts and gears
- Restores factory-smooth rotation
Usage Notes
- Replace in pairs for balanced wear
- Clean and oil periodically
- Use a bearing puller for stuck units
Technical Specs
- Type: Ball Bearing
- Inner Diameter: 4mm
- Outer Diameter: 8mm
- Width: 3mm
- Quantity: 2 pieces
- Manufacturer: HPI Racing
What's Included
- (2) HPI Racing 4x8x3mm Ball Bearings
Fitment
- Compatible with HPI RC vehicles using 4x8x3mm bearings
- Steering, small drivetrain, and accessory applications
Summary
Restore smooth, efficient rotation with these genuine HPI 4x8x3mm ball bearings — a simple, high-impact maintenance item for any compatible HPI build.
