HPI Savage 21/Savage 25/Savage X 13 Fin Engine Heatsink - HSA-027/B by 3Racing  [HSA-027/B]

Finned head cooler for Savage engines

This finned heatsink is a scale accessory for HPI Savage 21, Savage 25 and Savage X 13 engine heads, supplied as part code HSA-027/B. It adds a larger finned surface around the engine head to help dissipate heat during extended running.

The unit installs in place of the factory head cooling piece on compatible Savage heads and uses the existing mounting points. Verify clearance against your tuned pipe and stack before final tightening, and follow your engine manual for correct thread-lock and torque settings.

As a passive cooling component it does not alter ignition timing or fuel delivery, but it can reduce peak head temperature under load and help keep engine behaviour more consistent across practice and race runs.