This Factory Pro option upper deck is an RC-scale replacement part designed for the Xray T4-20 chassis. It serves as an alternative mounting and stiffness element in the car's mid-section, intended for hobbyists tuning chassis balance and steering response.
The component installs in the stock upper-deck area and uses existing factory mounting points on the T4-20 chassis, so no additional brackets are required. Installation typically involves removing the factory upper deck and transferring hardware to the option piece, taking care to maintain original screw locations and torque settings for reliable fitment.
In tuning terms this upper deck acts as a chassis rigidity lever: selecting this Scythe Type option changes upper-deck behaviour and can affect how the car transfers weight through the chassis during cornering and on-throttle transitions. Use this part as one element within a broader setup approach that includes shock tuning, anti-roll adjustments, and tyre choice.
This upper deck is offered as a direct-fit option for Xray T4-20 users seeking a different upper-deck characteristic for setup work; evaluate its effect in controlled test runs and combine with suspension and tyre changes for measurable tuning results.
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