This is the Tekin FX-R Brushed Electronic Speed Control and T35 HD 35 Turn Rock Crawler Brushed Motor.FEATURES: ESC- Forward/Brake/Reverse Easily access all to all programming On board temperature indicator PC interface for custom programming (Tekin HotWire required) Solder posts for easy wire replacement Self diagnostics and factory reset Pit tune mode Digital glitch filtering QuickTune one touch programming One touch radio calibration Programmable features: Drag brake - 13 steps Neutral width - 13 steps Current limiter - none, 12 steps Push control-anti drag - 13 steps Throttle profiles - 7 choices Brake profiles - 7 choices Reverse type - 3 steps Reverse strength - 13 steps Voltage cutoffs - none, 2S, 3S, custom Motor- High-strength upgraded ferrite magnets Legal for rock crawling competitions Completely rebuildable Dual precision ball bearings 120 day limited warranty on both componentsINCLUDES: FX-R Brushed Electronic Speed Control with two 1x1" pieces of Servo Tape, two Zip Ties, two Tekin Logo Decal Sheets, Capacitor, Instructions and 35T Brushed Motor with LeadsREQUIRES: Installation following the included instructions Pinion gear depending on vehicleSPECS: ESC- Input Voltage: 4-9 Cells/2-3S Lipo Motor Limit: 12 turn On Resistance: 0.0012 ohms BEC: 6V/3A Dimensions: 1" x .8" x .4" (25mm x 20mm x 10.2mm) Motor- Input Voltage: 3S LiPo or 10-cell NiMH battery Dimensions: 2.07 x 1.42" (52.7 x 36mm) Shaft Diameter: 0.125" (3.2mm) Bearing Size: 3/8 x 1/8" jxs 07/25/11 ir/jxs