HPI Racing Tuning Part #109926.
Genuine HPI quality tuning part for easy optimization and tuning. Heavy Duty Diff Shaft for the RS4, Savage XS and Bullet trucks! These Heavy Duty parts will reduce drivetrain wear and extend service intervals.
- HPI Racing RS4 Sport 3 - incl. Drift and Flux models.
- HPI Racing Savage XS Flux.