Arrowmax AM-950021 is a honeycomb-pattern aluminium chassis flex designed as an aftermarket upgrade for Serpent X20 cars. It does not change suspension geometry but alters chassis stiffness so builders can fine-tune mid-motor response on 1/10 electric touring platforms using the Medius X20 MID arrangement.
Technically the honeycomb profile offers a controlled bending behaviour that helps with traction and dynamic weight transfer in turns. Compared with flat aluminium sheets it remains lightweight while giving more repeatable flex. The plate usually replaces the stock flex element or mounts to existing points without moving primary components like the servo, ESC, or motor.
Since this is an accessory, confirm your chassis cutouts and screw boss positions. Trial-assemble to check wiring clearance and ensure no interference with the electronics bay or suspension arms before final torquing.
Fit this plate when you want a metal-based, repeatable flex characteristic for mid-motor Serpent X20 builds; check SER400033 layout details and adjust mounting torque carefully to dial in handling.
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