Details:
1. The weight of it is 25g vs the stock one at 5g.
2. Additional weight of it can improve the car stability and reduce the chance of traction roll.
3. Narrow design can improve the roll of car and not touching the track surface at steering.
4. Two sets of holes for fixing battery mount to adjust left/right weight balance.
5. Two pieces of carbon fiber for adjusting the width of chassis.
