I just mounted the diff joint on my F103 RM and it is an upgrade that really improves the car`s acceleration and speed, by upgrading your gears, bearings and motor, you will improve the overall performance of the car. This part looks good, performs well and is resonably priced.
This lightwieght diff joint set is a real geat product, it`s a lot lighter than the stock diff joint and you can feel the difference once you have mounted it on your car. By reducing the weight of your main shaft, diff joint and upgrading your gears or motor, you will get a better overall performance of the car. Though remember to tighten the grub screw properly or risk damaging the shaft