Dear，Pls leave a massage to tell us what design (Color) do you want.thank you.

The set includes a 3650 4370KV 4P Brushless Motor and a 45A brushless Electric Speed Controller(ESC)， which is perfect for the 1/10 RC Off-Road Car. This 3650 4370KV 4P Brushless Motor is built from the best materials available， and is designed to provide both quality and performance at an affordable price. And it's with high quality aluminum alloy parts that are produced on the latest CNC milling machines. Additionally， the 45A brushless ESC features enhanced throttle response，excellent acceleration， strong breaks and throttle linearity.MotorFeatures:4 poles Hi-torque motor design.CNC machined 6061 T6 billet alumium heatsink can.High purity copper windings maximizes efficiency.High RPM ABEC5 oversized bearings.Universal fit all 1/10 brushless cars-multi-mounting system for M3 screws.Precision balanced rotor， smoothness for best reliability and maximum RPM.Stator - Super Thin (0.35mm) laminations.Removable/replaceable.Precision engineered for maximum energy conversion.ROAR legal.Specification:RPM: 4370KVMax Current: 66AMax Watts: 820WCan Size: 3650Sensored: NoCan Diameter: 36mmCan Length: 50mmShaft Diameter: 3.175mmShaft Length: 15mmBullet Connector: 4mmWeight: 146g/5.2ozMax voltage: 7.4V(2S)-11.1V(3S)Note: there's some little error from human measuring.Electric Speed ControllerFeatures:Compatible with sensorless brushless motors.High anti-interference capability.Using advanced software interface to set up or update the software.Super smooth and accurate throttle linearity.Fast response to throttle input.Mutiple protection features: low voltage cut-off protection， over-heat protection and throttle signal loss protection.Specifications:Cont. Current: 45ABurst Current: 260A/10secBattery: 2-3 Cell Lipo / 4-9 Cell NiMhSBEC: YesSBEC Output: 5.8V/3APower Supply Plugs: T MaleMotor Plugs: Female 4mm Bullet ConnectorSize: 45*35*35mm(with out fan)Weight: 76g /2.7ozPackage size: 11 * 9 * 6.5cm/ 4.3 * 3.5 * 2.5inPackage weight: 261g/9.2ozPackage list:1 * 3650 4370KV 4P Sensorless Brushless Motor1 * 45A Brushless Electric Speed Controller