Tamiya 51085 TB Evolution IV Upper Deck Stiffening Part  [51085]

Upgrade Chassis Rigidity on the TB Evo IV

The Tamiya 51085 Upper Deck adds reinforcement to the TB Evolution IV chassis, helping to curb flex that can unsettle handling. It is made to mate cleanly with the stock layout to improve on-track confidence.

Track-Focused Handling Improvements

Reinforcing the top of the chassis assists in keeping suspension geometry more consistent under stress, which helps drivers maintain traction and steering precision during demanding laps.

Compatibility with Stock Components

Specifically matched to the Tamiya TB Evo IV, the upper deck uses existing screw points and mounts so you can swap it in without fabricating adapters or altering other parts.