HPI Racing 4-40 4.3x4mm Balls (4-Pack) — Sprint 2

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.