This front split upper deck is tailored for the ARC A11 chassis and is sold under Factory Pro part number O-ARCP05. It is manufactured as a 2mm graphite plate in a split layout to influence stiffness in the area ahead of the front bulkhead.
The split arrangement enables precise adjustments to left and right stiffness or experimentation with alternate deck thicknesses to tune turn-in and front traction. It is intended for 1/10 electric touring car competition and for venues where subtle chassis flex changes have measurable handling effects.
Fitting follows the ARC A11 factory mounting scheme: remove the stock front upper deck and install this part using the same screw points. After fitting, inspect servo area and suspension tower clearance and perform brief test laps to validate steering geometry and bump steer.
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