The Serpent SER402186 Topdeck soft comes as a two-piece set designed for the Medius X26 steel EP (SER400052) chassis. The softer material lowers chassis stiffness relative to harder decks, which influences mid-corner grip and the way weight shifts through transitions.
Installation fits the Medius X26 steel EP stock mount points and uses existing hardware, allowing a direct swap with the original topdeck. Ensure the deck seats flat and screws are torqued evenly to avoid inducing chassis twist; check wheel alignment and run short test laps after any change to confirm effects.
Practical tuning: deploy the soft topdeck to soften either the front or rear response based on its location in the stack, and tune springs and anti-roll bars accordingly to maintain a balanced setup. Track times or driver feedback are useful to validate changes.
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