The Tamiya Lightly Tuned Motor (28T) is perfect for installing into M-03. M-04 chassis to participate in official Tamiya races. It provides more torque than the normal RS-540 type motor, & can sustain Its high performance for long durations. This motor is also compatible with touring car chassis & is a great upgrade for beginner drivers to let them gradually adjust to higher performance motors. About this exclusive product. Number of turns. 28. Usable Voltage. 7.2v. Torque at best efficiency. 564g/cm (7.2v). RPM at best efficiency. 16, 300rpm (7.2v) All models are supplied un-assembled & unpainted, in their retail box.