The framework features extra holes that allows to move your whole suspension system more ahead to extend the wheelbase of the car. The framework features 3 wheelbase modification positions. The full backward place is identical to the original X1 framework wheelbase. One other two additional jobs stretches the wheelbase for the vehicle by 4 and 8mm. The longer the wheelbase is, the automobile is more stable and more straightforward to drive. But longer wheelbase decreases car response, rotation and steering. Shorter wheelbase is preferred for smaller technical tracks and longer for lots more open tracks. The 2.5mm chassis & top deck are produced from top quality graphite product.