OPTIMIZED COOLING SOLUTION Introducing the Power Hobby Blue Aluminum Motor Heat Sink with Twin Cooling Fans, designed specifically for the Traxxas Slash 4WD. This dual fan system is your must-have accessory to combat motor heat and enhance performance. EFFECTIVE HEAT DISSIPATION Heat is detrimental to electric motors, and this heatsink clips securely onto 540 or 550-sized motors, providing superior cooling. Its anodized coating and strategically designed fins increase surface area for optimal heat dissipation. SIMPLE INSTALLATION The cooling fan is conveniently powered through a standard 2-pin Rx plug, ensuring an easy connection to your existing setup. SPECIFICATIONS YOU CAN RELY ON With the following dimensions, this heatsink is perfectly sized: Length: 2.4 inches (61 mm), Width: 1.57 inches (40 mm), Height: 1.65 inches (42 mm). IMPORTANT NOTE Please be aware that the power supply connected to the included fan should not exceed 6VDC for safe operation. Ensure your electric motor runs efficiently and remains cool under pressure with this essential upgrade.