The 3Racing HSA-027/B 13 Fin engine heatsink in blue boosts cooling for HPI Savage 21/25/X engines by increasing surface area and airflow. This compact aluminium unit is made to help keep head temperatures lower during extended throttle use, making it a solid upgrade for performance-minded hobbyists.
Machined aluminium construction delivers consistent thermal conductivity while the 13 fins spread heat away from the head quickly. The profile encourages airflow around the engine to reduce hotspots and help maintain steady power output during hard runs.
Engineered to match the HPI Savage mounting points, the heatsink fits directly without extra modifications. Its secure placement helps prevent loosening under vibration, so you get a straightforward cooling upgrade that lasts.
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