For those Xray drivers that want to continue to use their RC Maker options on their T4’21, the Australian company has produced an updated Slimflex chassis and top deck. With the T4’21 seeing only some slight adjustments to the design, the chassis and top decks feature only minor adjustments from the T4’20. The 2.2mm thick chassis profile remains unchanged, however they have now been able to add additional holes to the rear of the chassis to enable the use of their ‘weight shift’ adjustable chassis weights. The topdeck has also undergone minor adjustments after feedback from their team drivers and have now added an additional brace in front of the spur gear to increase the rigidity in high traction and hot conditions to provide more corner speed. If running on low to medium grip, you may want to look at removing the brace for increase flex in the front. The top deck is available in both 1.6mm and 2.0mm versions.