Motor Heatsink 4685 Motor Fans and they feature internal diaphragms

and they feature internal diaphragms that help keep the air and oil separated for increased performance

No vehicle chassis is included with this product

Over a thousand hours of dyno testing and real-world running was invested to develop the formula for Top Fuel Power Plus

Wheelie bar arm (1)/ connector (1)/ 3x12 SS (hex drive) (4)

Hollow ball set

Motor Heatsink 4685 Motor Fans and they feature internal diaphragmsMOTOR HEATSINK 4685#ARA390296 OVERVIEW: This aluminum Motor Heatsink keeps your motor running cool when the action heats up. FEATURES: Precision manufactured for a perfect 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 mounting of 50mm fans Included heatsink clip Suited to 46mm diameter motors