XRAY 301079-K X4 Split Front Wave Glass Fiber Upper Deck - Flex Tuned  [XR-301079-K]

Handling Gain with the XRAY X4 Glass Fiber Upper Deck

The XRAY 301079-K X4 Glass Fiber Upper Deck is a straightforward upgrade for racers needing more grip and sharper steering on low- to medium-grip surfaces. Made from 1.5mm glass fiber, this upper deck increases chassis compliance to improve traction and driving precision.

Chassis Flex That Adapts to Track Grip

The X4 upper deck's geometry boosts chassis flex so the car responds more consistently across changing track conditions. That added compliance helps the tyres maintain contact during corner entry and exit, producing improved mid-corner feel while keeping steering predictable.

Tuneable Mounting for Rider Preference

Two mounting options let you tailor handling to your driving style:

• Soft Setting: Use a single rear screw to let the deck flex more, increasing steering and bite. This setting enhances cornering turn-in but can feel less stable when applying lots of power.
• Stiff Setting: Fit both screws to reduce flex, lowering mid-corner steering and rotation. This option gives maximum on-power stability and easier car control.