This is a replacement Arrma 8S-BLX Motor Heatsink, intended for use with 8S-BLX Kraton kits. 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
Includes:
(1) Motor Heatsink (4685 Size Motor)
(1) Motor Heatsink Clip