XRAY 301078-K X4 Glass Fiber Split Rear Upper Deck - Race Ready  [XR-301078-K]

Upgrade the X4 with a Glass Fiber Split Rear Upper Deck

The XRAY 301078-K glass fiber upper deck is an effective option for racers wanting more precise handling on low to medium grip tracks. The 1.5mm glass fiber construction delivers controlled chassis flex to aid traction and steering precision.

Flex Settings Explained

The unit offers two practical settings so you can tune the car's balance:

• Soft Setting: Fitting a single rear screw increases flex, improving turn-in and mid-corner bite but it can make the car less sure-footed under heavy throttle.
• Stiff Setting: Using both screws reduces flex to give steadier exits and a more predictable platform at the expense of some mid-corner rotation.