New from Smokem are new split lower bulkheads for the Xpress XQ1. Offering vastly improved flex characteristics, they allow the car to generate improved grip and widen the chassis' tuning window.

The design also uses flanged bearings for mounting the sway bars to the bulkheads. This allows the bearings to be inserted from the centre of the car for easier installation and smoother operation. This item is for one single replacement bulkhead without bearings.