This aluminum motor heatsink keeps your motor running cool when the action heats up.FeaturesPrecisely manufactured for an excellent fit – Black anodized finish with etched ARRMA logo for cool looks – Constructed from high-quality light-weight aluminum – Multi-fin design increases surface area for efficient heat transfer – Flat area allows the mounting of aftermarket fans for additional cooling - Specifically designed for the ARRMA 4X4Includes1 x Motor Heatsink