This fin-pattern heatsink is a scale accessory intended for use on HPI Savage 21, Savage 25 and Savage X 13 engines. Finished in a titanium tone, it mounts over the engine head to provide extra surface area for passive cooling on nitro RC engines.
Fitting is straightforward for anyone comfortable with nitro engine maintenance: remove the stock cooling head or cap where applicable, align the heatsink over the head, and fasten using the original mounting points or any included hardware. Make sure to double-check carburettor and servo clearances before tightening completely.
On the bench or during longer running sessions this component acts as a thermal support item rather than a standalone performance mod: it helps control head temperature during extended use and aids in consistent tuning observations.
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