This Factory Pro option upper deck is a scale replacement made for the XRAY T4-20 chassis. It serves as an alternative mid-chassis mounting and stiffness component aimed at racers fine tuning balance and steering reaction.
The part mounts into the stock upper-deck area and uses the T4-20 factory mounting points, so extra brackets are not required. Typical fitting involves removing the original upper deck and reusing the factory fasteners while keeping screw positions and torque settings to ensure correct alignment.
From a setup viewpoint the Scythe Type deck works as a chassis rigidity control: selecting this option changes upper-deck behaviour and can influence how the car transfers weight through the chassis during cornering and throttle transitions. Use the deck in concert with damper, anti-roll and tyre changes as part of a measured setup process.
Supplied as a direct-fit option for XRAY T4-20 users seeking an alternative upper-deck trait, assess its influence with controlled runs and pair with suspension and tyre adjustments for measurable gains.
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