The X4 top deck features milled holes for unique tweak-free top deck screws and works together with the guts layshaft location within the framework. Machined from 2.0mm graphite product, the look of top deck is done specifically to obtain maximum traction and great steering traits at precisely the same time. The original top deck flex settings allows effortless modification with this specific flex between 4 different traits. The very best deck are linked to the motor mount utilizing these alternatives: 1.) smooth setting - No bushing or bearing can be employed. This permits maximum flex and maximum steering. But the vehicle is less stable on-power. 2.) Soft-medium environment - The top deck is connected to the motor mount via ball bearing. This environment eliminates some steering but improves safety. 3.) moderate environment - the top deck is from the motor install via unique screw M3x5.5mm behind layshaft. This environment eliminates some steering but improves stability. 4.) rigid setting - top deck is for this engine install via unique screws M3x5.5mm behind plus inside front element of layshaft. This environment provides maximum stability and improves steering response.