Overview
The HPI Racing 4-40 4.3x4mm Balls (4-Pack) are genuine factory replacement balls used in the suspension and steering linkages of the HPI Sprint 2. The 4-40 thread mounts the ball into the chassis or arm, while the 4.3mm sphere accepts the ball cup.
Worn or scored balls cause loose linkages and inaccurate suspension geometry — fresh balls restore tight feel.
Key Features
- Genuine HPI Racing replacement balls
- 4-40 mounting thread
- 4.3 x 4mm ball dimensions
- Hardened steel construction
- Sold as a 4-piece pack
Performance Benefits
- Restores tight linkage articulation
- Maintains accurate geometry
- Long-lasting steel material
- Pack of 4 covers all corners
Usage Notes
- Apply thread-lock at install
- Replace ball cups at the same time for fresh assembly
- Apply light grease to ball surface
Technical Specs
- Type: Ball
- Thread: 4-40
- Dimensions: 4.3 x 4mm
- Quantity: 4 pieces
- Material: Hardened Steel
- Manufacturer: HPI Racing
What's Included
- (4) HPI Racing 4-40 4.3x4mm Balls
Fitment
- HPI Sprint 2 1/10 scale electric on-road platforms
Summary
Tighten up your Sprint 2's linkages with this genuine HPI 4-40 4.3x4mm ball 4-pack.
