HPI Savage 21/25 Graphite Side Chassis HSA-001/1 by 3Racing  [HSA-001/1]

Graphite side rails for Savage 21 and 25

This HSA-001/1 graphite side chassis is an RC-scale replacement panel made for HPI Savage 21 and Savage 25 models. It fits the stock mounting layout and provides a stiffer structural panel compared with stamped or plastic side chassis pieces.

In practical tuning the increased chassis stiffness reduces flex under acceleration and on hard landings, which helps steering feel more precise and keeps suspension geometry consistent. Expect the handling balance to shift from a softer setup, and plan minor changes to droop and anti-squat when dialling in the truck.

Installation uses the original attachment points on the Savage 21 and Savage 25 chassis rails; verify fastener alignment and bearing clearance during fitment to avoid binding. The item ships as a single piece and is intended for RC-scale use only.

Choose this graphite side chassis to stiffen the platform and achieve more predictable handling for Savage 21 and 25 trucks.