These arm inserts are made of 1mm, 3k carbon. They are an exact fit as the stock plastic inserts. These are a tuning aid to change the flex in the rear of the car. They also help keep the arm stiffer in hot weather.
There are 2 inserts per package.
HB Rear Arm Inserts
- Brand: 454 RC Works
- Product Code: HBFAI001
- Availability: 6