This is a Hop-Up Option is for use with the TD4 chassis. The rigid aluminum differential nut allows precise adjustment of ball differentials used on the kit. A precision differential screw is included.
- This durable aluminum differential nut (blue) and precision differential screw can be used in place of the kit standard plastic nut for superior precision.
- Comes with the differential spring, thrust plate, and 1/16-inch steel balls.
- Compatible with TD4 chassis cars. | 
