Tekin brand Tekin 17.5T Redline Gen2 RPM Sensored Brushless Motor. FEATURES: Specifically designed for 1/12 scale 1S LiPo and stock racing RPM version tweaked to provide extra edge in stock racing Higher RPM output and lighter that non-RPM Gen2 versions Legal in major governing racing bodies Dual plug sensor wire harness for all sensored and sensoreless systems CNC machined T 6061 billet aluminum heatsink can with anodized endbell plates High RPM precision bearings High purity copper windings Adjustable timing Neodimium sintered magnet YOU WILL RECEIVE: Tekin 17.5T Redline Gen2 RPM Sensored Brushless Motor with Sensor Wire SPECS: Weight: 6.2oz (177g) Shaft Dimensions: 1/8 x 0.60 (3.2 x 15.3mm) Motor Diameter: 1.40 (35.85mm) Motor Length: 2.03 (51.8mm) Bearing Dimensions: front: 4x13x5mm rear: 1/8x3/8x5/32 kV: 2400 Rotor: 12.3mm jxs 11/05/12 ir/jxs