HPI 72215 Gear Diff Adjustment Spring Set Medium Firm & Stif

HPI 72215 Gear Diff Adjustment Spring Set Medium Firm & Stif

Genuine HPI Racing gear diff adjustment spring set including medium, firm, and stiff options. Swapping diff springs changes how the differential loads up, letting you tune power delivery and cornering behavior to suit your driving.

A simple, effective tuning set that also replaces worn springs to restore consistent diff action.

• Genuine HPI Racing part #72215
• Gear diff adjustment spring set
• Includes medium, firm, and stiff springs
• Tunes differential feel and power delivery
• Direct-fit factory parts