This Kyosho factory replacement motor heatsink is designed for the Hang On Racer 1/8 scale motorcycle platform. The finned metal collar wraps around the motor can to draw heat away during operation, helping maintain consistent performance. It features a split-collar design secured by a set screw, allowing straightforward installation and removal without disassembling the drivetrain. Features: Split-collar design for easy on and off installation Set screw retention for a secure fit on the motor can Finned outer surface for improved heat dissipation Includes set screw 7/7/26 cs