Adjust the chassis flex by connecting this carbon brace between the upper bulkheads on top of the top deck. This upper bulkhead brace is cut with high precision from 1mm carbon plate and can change the steering and traction characteristics by effecting the rigidity of the front or rear bulkheads. Front of top deck: High-speed corner steering is increased. Low-speed corner steering decreased. Rear of top deck: Increased rotation in the rear. Understeer is reduced. On power traction slightly reduced.