Standard features include an updated HD solder post design for easy soldering, a High Voltage BEC and HotWire compatibility for extensive tuning. Next generation components put more power at your disposal and new firmware make the RS GEN3 our smoothest, best-driving RS ever. Controls: Forward/Brake/Reverse Input Voltage: 2S-3S LiPo / 4-9S NiMH-NiCD Motor Limit Brushless Mode 2S: 8.5T 2-pole 36mm Can Motor Limit Brushless Mode 3S: 10.5T 2-pole 36mm Can Motor Limit Brushed Mode 2S: 10T 36mm Can Motor Limit Brushed Mode 3S: 20T 36mm Can Max Current: 140amps per phase* BEC: 6.0v / 7.4v @ 5.5amps 1.0 x 1.3 x .51" / 24.5 x 34 x 12.9mm Weight: .83oz / 23.5g Motor: Input Voltage: 1-2S LiPO - 25.5T / 21.5T / 17.5T / 13.5T / 10.5T / 6.5T Weight: 5.1oz / 145g Shaft 3.18mm (1/8") x 15.3mm Motor Diameter: 35.85mm / 1.40" Motor Length: 50.25mm / 1.978" Max Operating Temperature: 180°F / 82°C Bearing Front: 4x13x5mm Rear: 1/8x3/8x5/32" Rotor Size: 12.3mm BLACK - 25.5T 12.5mm BLUE - 21.5T / 17.5T / 13.5T / 10.5T Rebuildable: Yes