Front some the split upper deck. The split (2 piece) top deck is preferred mainly for asphalt tracks. The most truly effective deck features milled holes for unique tweak-free top deck screws. Many known deck provides more steering response, and much more on power steering. The flex characteristic varies in comparison to kit top deck, along with the 2 pieces allows more flex choices, that is modified individually between front side and rear. Machined from 2.0mm graphite product, the proper execution linked to top deck is done especially to own maximum traction and great steering characteristics at the same time. The top deck are linked to the engine mount making use of these choices: 1.) smooth environment - just one single rear screw is required. This permits maximum flex and maximum steering. Nevertheless the automobile is less stable on-power. 2.) rigid environment - Both screws are employed. This environment provides paid off flex, rotation is paid down. This environment provides maximum security and makes the car better to drive. Fits X4F.