This is the TrakPower 13.5T 2,800kV Sensored Brushless Motor. FEATURES: Designed specifically for 1/10 scale on and off-road competition ROAR and IFMAR compatible Ribbed CNC aluminum case provides more surface area for heat dissipation, vent holes increase air flow Rotors are sintered to handle higher temperatures Mechanical timing allows fine tuning of RPM and torque Heavy duty solder tabs Rebuildable 120 day limited warranty through TrakPower beginning at date of purchase INCLUDES: TrakPower 13.5T Sensored Brushless Motor with Sensor Wire, Sensor Clip Screw, and Instructions SPECS: Input Voltage: 2-3S LiPo kV Rating: 2,800 Dimensions: 1.4 x 2.06" (35.9 x 52.4mm) Shaft Length: 0.59" (15mm) Shaft Diameter: 0.125" (3.175mm) Weight: 6oz (170g) jxs 12/05/12 ir/jxs