This split upper deck fits the ARC A11 platform and is made from 1.6mm graphite to reduce front-end flex. The lighter, stiffer layout is aimed at drivers who want to tighten turn-in and increase steering precision during setup work.
It attaches at the stock upper-deck mounting points so the chassis geometry remains unchanged. For best results, align the deck carefully and torque screws evenly to avoid introducing asymmetric loads that could affect handling.
When evaluating this deck as part of a setup program, change only one parameter at a time and record lap times and driver feedback to determine the deck's effect on understeer or oversteer characteristics.
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