The Serpent 402187 Topdeck hard is supplied as a focused RC topdeck kit for use on Medius X26 chassis listed as SER400052. The pack includes two "hard" topdeck pieces intended for builders seeking reduced chassis flex to alter handling balance.
Placed above the main chassis plate, the topdeck adds torsional stiffness. Fitting a harder topdeck typically cuts flex between front and rear mounts, which can produce crisper turn-in and steadier behaviour at speed depending on other setup choices. Note that changes here affect suspension response, so use it together with shock and roll center tuning.
Fitting requires basic model workshop skills: remove the body and the current topdeck fasteners, position the new topdeck in the original mounting points and secure with the chassis hardware. Check clearance around radio gear and the battery before final torque. No dedicated tools are included.
This Serpent 402187 Topdeck hard (2 pcs) gives a straightforward option to stiffen Medius X26 chassis where reduced topdeck flex is wanted, and should be evaluated with suspension adjustments to reach a balanced setup.
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