GPM SAV1815 Savage 21 13-Fin Aluminum Engine Heat Sink  [SAV1815]

Reliable cooling for HPI Savage 21 engines

The GPM SAV1815 13-fin heat sink increases the cooling surface on the HPI Savage 21, helping the engine run at reduced temperatures during hard use. This bolt-on upgrade improves thermal stability and supports longer sessions without overheating. Ideal for hobbyists wanting straightforward thermal improvements.