The Tamiya Dirt-Tuned Motor (27T) is a Lightly tuned motor designed for use in off-road racing & for Tamiya official grand prix races. Worn-out brushes can be replaced to maintain optimum performance. This motor can be used with the TEU-101 Speed controller that comes stock with most buggies. About this exclusive product. Number of turns. 27. Usable Voltage. 7.2. Torque at best efficiency. 380g/cm (7.2v). RPM at best efficiency. 17, 000rpm (7.2v) All models are supplied un-assembled & unpainted, in their retail box.