We are pleased to announce the launching of the new Aluminum Large Heat Sink Plate for M05-013BU. The original M05 car does not come with a heat sink for motor which may become overheated. This product is specially designed to solve this issue, which features large heat sink plate for enhanced heat releasing performance. http://www.rcmart.com/catalog/rc-yeah-racing-aluminum-large-heat-sink-plate-m05013bu-p-33567.html