This rear topdeck is an RC-scale replacement part intended for the rear topdeck position on Serpent 4X FWD models. It serves as a chassis brace that affects torsional stiffness and the way the rear suspension reacts to inputs, giving a predictable change to handling when used as part of a setup cycle.
Installation is straightforward for users familiar with 1/10 on-road assembly, requiring basic tools such as hex drivers. Remove the original rear topdeck, check mating surfaces for burrs or paint, fit the Arrowmax topdeck in the rear position, and tighten fasteners to secure but not over-torque to avoid stressing mounting points. After installation re-check alignment and suspension movement through full travel.
In tuning practice this 2.0mm rear topdeck is used to fine-tune chassis flex characteristics, often combined with swaybar, shock, and shock mounting changes to achieve balance between rear grip and turn-in behaviour. Treat it as one element in the overall setup rather than a standalone cure.
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