HB TCXX Upper Deck 2.0mm Top Plate - Arrowmax AM-TCXX-68484  [AM-TCXX-68484]

HB TCXX replacement upper deck

This upper deck is an RC-scale replacement part intended for use with HB TCXX series chassis, supplied as Arrowmax AM-TCXX-68484. At 2.0mm thickness it acts as a structural top plate tying the front and rear layouts together, helping to stabilise chassis flex and giving a repeatable mounting surface for electronics and suspension pick-ups. The focus is on fit and consistency rather than aftermarket performance claims.

Installation is straightforward: remove the stock upper deck, align the AM-TCXX-68484 with the existing factory screw holes, and secure it using the original hardware. No extra modifications are required for an unmodified HB TCXX platform. After fitting, re-check screw torque and clearances, and ensure radio gear and wiring sit clear of the plate.

Tuning note: swapping deck thickness shifts the chassis torsional stiffness baseline. A 2.0mm deck generally produces moderate stiffness suited to balanced handling on mixed surfaces; choose this plate when you want a predictable mid-range response. Use it alongside standard suspension and tyre setup changes rather than treating the deck as a sole tuning fix.

Fit this 2.0mm top plate to an HB TCXX when you want consistent baseline stiffness; confirm fitment and re-check mounting hardware after the first runs.