This is the Tekin RS Gen 2 ESC Brushless Electronic Speed Control with the 13.5 Redline Gen2 Sensored Brushless Motor. RS Gen 2 ESC (TEKM1154); Compatible with sensored, sensorless, brushless, and brushed motors High voltage programmable Battery Eliminator Circuit (BEC) HotWire PC interface for advanced programming and updating, EZ access programming port (HotWire Interface (TEKM1450), and Gen 2 Adaptor (TEKM3825) required) Forward, brake, and reverse operation D2 Dual Drive Mode technology On-board temperature indicator Sensor plug for precise commutation with all motors Gold plated solder posts Pit tune mode Self test diagnostics and factory reset DGF2 Digital Glitch Filtering V2 QuickTune programming with one-touch radio calibration 13.5 Redline Gen2 Motor (TEKC2407); Specifically designed for 1/12 scale 1S LiPo and stock racing 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 120 day limited warranty through Tekin beginning at date of purchase RS Gen 2 Brushless ESC with Instructions, Motor and Receiver Wires 13.5 Redline Gen2 Motor with Sensor Wire ESC; Input Voltage: 4-9 cells, 2S-3S LiPo BEC: 6.0V/7.4V, 5.5amps Brushless Mode Motor Limit: 8.5 turn, 540 2-pole (36mm) Brushed Mode Motor Limit Forward Only: 10 turn Brushed Mode Motor Limit Reverse: 12 turn Max Current: 120amps per phase Timing Profiles: 7 choices on-board Brushed Modes: Fwd Only, Fwd/Rev, Rev Delay Brushless Modes: Fwd Only, Fwd/Rev, Rev Delay 1.0 x 1.3 x .51" (25.4 x 33 x 12.9mm) Weight: 2.0oz (48g) with wiring 13.5 Redline Gen2 Motor; Weight: 6.2oz (177g) Shaft 5 x 15.3mm Motor Diameter: 1.40" (35.85mm) Motor Length: 2.03" (51.8mm) Bearing front: 4x13x5mm rear: 1/8x3/8x5/32" kV: 3400 Rotor: 12.5mm jxs 05/02/13 ir/jxs &