This 3Racing HSA-001/1 graphite side chassis is an RC-scale replacement part designed for HPI Savage 21 and Savage 25 models. It serves as a direct-fit structural panel to replace or upgrade the stock side chassis, using graphite material to increase torsional stiffness compared with typical stamped or plastic panels.
In practical tuning, a graphite side chassis reduces chassis flex under throttle and during landings, which can make steering response and suspension geometry more consistent. Expect changes in handling balance when swapping from more compliant panels, so retune suspension droop and anti-squat settings accordingly.
Installation follows the original attachment points on the Savage 21 and Savage 25 chassis rails; confirm fastener alignment and bearing clearances during fitting to avoid binding. The part is sold as a single piece and intended for RC-scale use only.
Choose this graphite side chassis when you want a firmer chassis platform for tuning and more predictable handling on Savage 21/25 scale RC trucks.
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