Feature: 1. High‑purity 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. High‑strength magnets provide unparalleled brushed motor performance, excellent torsion and long life. 4. Direct welding wiring guide, providing flexible welding options. Suitable for 1/10 1/12 RC off‑road vehicles. 5. Double ball bearings, balanced speed, low noise, detachable/replaceable structure, easy to clean and maintain. Specification: Condition: 100% Brand New Item Type: RC Motor Material: Carbon Steel + Copper Color: Black No-Load Speed: 23000 ± 12%RPM No-Load Current: <2.2A Voltage: 7.4V-11.1V Motor Shaft: Approx. 3.175mm / 0.1in Blocking Current: 13.7-76.4A Torsion: ≥2670.0g.cm Shaft Length: Approx. 12mm / 0.5in Diameter: Approx. 35.9mm / 1.4in Length: Approx. 48.6mm / 1.9in Connection: CCW Compatible: Suitable for 1/10 1/12 RC off-road vehicles. Installation and Maintenance: 1. If you want to replace the motor mounting screws, please use the same type and size as when your vehicle was initially installed. 2. Do not over tighten the motor mounting screws. Doing so may strip the threads of the mounting holes. 3. Connect the + and -motor leads to the corresponding leads on your Electronic Speed Control ( ESC ). 4. To clean the motor, please gently wipe off the dirt regularly, especially pay special attention to the area around the ball bearing. Do not spray cleaners or solvents into the motor. 5. Check the brushes regularly to make sure they move freely inside the hood. 6. When the brush is worn or there are signs of color change, please replace the brush. Precautions and Warnings: 1. Avoid working temperature exceeding 65℃ (150℉). 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. Warning: When switching to a higher voltage battery from a lower one (for example, from 7.4V to 11.1V), a change in gear ratio or a lower KV rated motor might be necessary. Otherwise, the motor or ESC may overheat and suffer permanent damage.. Package List: 1 x 550 Brushed Motor2 x Silicone Wire1 x Manual Note: 1. Please allow 1‑3mm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.