Arrma Mega 570 Brushed Motor / This replacement motor is intended for the Arrma Infraction Mega 4×4. Key Features: High-quality 9T 570 size brushed motor has a perfect balance of straight-line pace and low-speed torque, cool ARRMA decal for eye-catching looks and easy motor recognition, capable of running on 6-7 cell NiMh or 2S LiPo battery for great flexibility to suit your needs, supplied fitted with 4mm male bullet connectors and 16awg wire, internal fan to reduce running temperatures, flux ring increases motor torque. Technical Specifications: Shaft Diameter: 3.175mm, Shaft Length: 17mm, Motor Diameter: 38.5mm, Motor Length: 65.0mm.