This is the Tekin 1/8 RX8 Brushless System with 4030 Brushless 2050kV Motor for use in 1/8 Buggies.FEATURES: T8 2050kV Brushless Motor: CNC Machined 6061 T6 Billet aluminum Ribbed Heatsink Can Sensored and Sensorless operation High Current Solder Tabs Rebuildable Design Neodymium Sintered Magnet Precision Engineered for Maximum Energy Conversion Dual-Plug Sensor Wire Harness RX8 ESC: Easily Access Programming, Anywhere, Anytime Drives Sensor/Sensorless Brushless and Brushed Motors D2: Dual Drive Mode Technology On-Board Temperature Indicator PC Interface for Custom Programming HDAC: High Density Copper Fet Boards Sensor Plug for Precise Commutation with all Motors Solder Posts for Easy Wire Replacement Self Test Diagnostics and Factory Reset RS-232 Digital Communications Protocol Pit Tune Mode DGF2: Digital Glitch Filtering V2INCLUDES: One T8 2050kV Brushless Motor One RX8 Sensored/Sendorless ESC One Cooling Fan and Mounting Hardware Zip Ties 12 gauge Motor Wires Tekin DecalsREQUIRES: Installation in the vehicleSPECS: Motor: kV Rating: 2050 Weight: 11.5oz(341g) Shaft Dimensions: 19mm x 5mm w/flat Motor Diameter: 1.57"(40mm)/1.65"(42mm) including fin Motor Length: 2.80"(71mm) ESC: Controls: Forward/Brake/Reverse Input Voltage: up to 6S Lipo Continuous Current: 210 Amps BEC: 6.0V/5.0A Motor Limit Brushless Mode: No Limit Motor Limit Brushed Fwd Only Mode: No Limit Motor Limit Brushed Fwd/Rev Mode: No Limit Throttle Profiles: 7 choices (on board) Brushed Modes: Fwd Only, Fwd/Rev, Rev Delay Brushless Modes: Fwd Only, Fwd/Rev, Rev Delay Dimensions: 1.5" x 2.2" x 1.4" Weight Approx: 2.7oz (76.5g) cnh 5/8/09 ir/jxs