A single battery charge provides up to 40 launches

Length: 521mm (20

- This will only work with center gear differential only (not with the slipper system)

approximately 280mm long

Power Hobby - Aluminum Motor Heatsink Cooling Fan for 1/10 540 and 550 Size Motors, Blue MVK150075 A single battery charge providesHeat is the enemy, especially when it comes to electric motors. Keep your temperatures in check and your motor running efficient and cool with our Motor Heatsink with Twin Cooling Fan. The motor heatsink clips right onto your 540 or 550 sized motor, and features an anodized coating and multiple heatsink fins for added cooling surface area. The cooling fan is powered through a standard 2 pin Rx plug. NOTE: All heatsink cooling fans, unless specified