The HSA-001/1 graphite side chassis is a scale replacement panel compatible with HPI Savage 21 and Savage 25. It is made to mount to the factory rail points and delivers greater torsional stiffness compared with common stamped or plastic panels.
From a setup perspective the stiffer chassis reduces unwanted flex during acceleration and impacts, yielding more consistent steering inputs and stable suspension geometry. Expect to revisit droop and anti-squat settings after installation to tune the new behaviour.
Install using the original Savage attachment points and confirm fastener alignment and bearing clearance to avoid binding. This item is supplied as a single piece for RC-scale use.
Ideal for drivers seeking a firmer chassis platform to improve predictability and tuning on Savage 21 and 25 trucks.
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