HB TCXX Upper Deck 2.25mm Stiffness Plate - AM-TCXX-68761-V2 by Arrowmax  [AM-TCXX-68761-V2]

Arrowmax AM-TCXX-68761-V2 2.25mm Upper Deck for HB TCXX

The Arrowmax AM-TCXX-68761-V2 is a 2.25mm aftermarket upper deck made to fit HB TCXX chassis. It installs as a direct-fit top plate that changes overall chassis rigidity to influence mid-corner balance and steering feedback without altering the suspension geometry.

Fit and installation: the deck lines up with the TCXX mounting points and secures with the stock screws and hardware. When swapping the plate, check that all holes align and reuse the original screw lengths to prevent interference with internal parts like the ESC or battery strap.

Tuning role: choosing a 2.25mm upper deck increases torsional stiffness relative to thinner plates, which can produce crisper turn-in and less flex under load. Use this upgrade for a firmer front-to-rear response on carpet or asphalt circuits and adjust shock springs and anti-roll balance incrementally to observe changes.

Treat the AM-TCXX-68761-V2 as a straightforward stiffness tuning option for HB TCXX cars; confirm fit before race day and change one setup parameter at a time to track its effect.