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

Engine heatsink for Savage series

This heatsink is a scale RC engine accessory designed for HPI Savage 21, Savage 25 and Savage X 13 models, supplied under 3Racing part code HSA-027/B. It provides an additional finned surface around the engine head intended to assist heat dissipation during running in model scenarios.

The part installs in place of the stock head cooling component on compatible Savage engine heads, aligning with the existing mounting locations on the listed models. Check fitment against your model before final tightening, and use appropriate thread-lock and torque values for the engine hardware as recommended by your engine or chassis manual.

In tuning terms the heatsink is a passive cooling accessory: it does not change engine timing or fuel delivery, but can reduce peak head temperatures under load and during longer runs, which helps maintain more consistent engine behavior during practice or race sessions.