Feature:1. Highpurity copper windings can maximize efficiency, accuracy designed for maximum energy conversion.2. The precisely balanced rotor, with high smoothness, can achieve the best reliability and maximum speed.3. Double ball bearings, balanced speed, low noise, movable/replaceable structure, easy to clean and maintain.4. Highstrength magnets provide unparalleled brush motor performance, excellent torque and long life.5. 35T brushed motor, direct welding wiring guide, providing flexible welding options.Specification:Item Type: 550 Brushed MotorMaterial: Carbon Steel + CopperColor: BlackMotor Shaft Size: Approx. 3.175mm/0.125inShaft Length: Approx. 12mm/0.5inMotor Diameter: Approx. 35.9mm/1.4inMotor Length: Approx. 48.6mm/1.9inWeight: Approx. 252.0g/8.9ozNo-Load Speed: 9500 12%RPMNo-Load Current: < 0.85AVoltage: 7.4V-11.1VBlocking Current: 6.9-29.5ATorsion: 2000.1g.cmConnection: for CCWFitment:Fit for 1/10 RC CarFit for 1/12 RC CarInstallation and Maintenance:1. lf replacing the motor mounting screws , use the same type and size that your vehicle was equipped withoriginally2.Do not over-tighten the motor mounting screws . Doing so may strip the mounting hole threads.3.Connect the + and-motor leads to the corresponding leads on your Electronic Speed Control ( ESC ).4.To clean your motor , lightly brush dirt away on a regular basis paying particularly close attention to the areasaround the ball bearings . DO NOT spray cleaners or solvents into the motor.5.On a reqular basis , inspect the brushes to be sure they move freely within their hoods.6.When the brushes become worn , or if they display signs of color change, replace them..Package List:1 x 550 Brushed Motor2 x Silicone Wire1 x ManualNote:1. Avoid working temperature exceeding 65C (150F).2. Do not touch the motor after use, because the motor may overheat.3. Allow the motor to cool completely between uses.4. Make sure to use the correct size motor mounting screws.5. Do not over tighten the motor mounting screws.6. When switching to a higher voltage battery from a lower one(to 11. 1v from7.4V, for example), a change in gear ratio or a lower KV rated motor might be necessary. Otherwise, the motor or ESC may overheat and sustain permanent damage7. Manual measurement, please allow 13mm/0.040.12in error, thank you.8. Due to the difference between different monitors, the picture may not reflect the actual color of the item.