New "RUSH 39K" Motor Series Motor - 39,000 RPM, 193 gr-cm torque - applications : dual shaft allows application in any car with standard Mabuchi type motor both in inline as well as sidewinder - Compatible with home racing wall pack power supplies - 2mm plain motor shaft

NOTE: this is the new Rush 36K with the open can for better cooling and a torqe rating of 193 g/cm.  The old one has a closed can and a torque rating of 208 g/cm.