1. Use high quality aluminum alloy material and steel gears, surface oxidation treatment, sturdy and durable.
2. Can control the servo through CH3 and manually switch gears two programs. Use CH3 control program original factory remote control does not work together.
3. High speed 15.7:1, low speed 56.6:1 provides two crawling speeds, can easily cope with a variety of road conditions.
4.Suitable for TRX4M original frame or other frames with large enough space. (Does not fit MEUS ripper)
5.Package includes gearbox*1, motor 87T*1