Tamiya 58331 TB Evolution IV Race Chassis Kit  [58331]

Track-focused engineering behind the TB Evolution IV

The Tamiya 58331 TB Evolution IV is built for racers who demand a refined, high-performance 1/10 platform. This chassis refines the TB Evo lineage with weight-saving elements and drivetrain upgrades that help maintain momentum through technical sections.

Stiff yet light carbon fiber structure

The core of this kit is its dual-deck layout made from carbon fiber reinforced polymer. With a 2.5mm lower deck paired to a 2.0mm upper deck, the design balances torsional rigidity and low mass to improve cornering response and stability at speed.

Durable drivetrain and responsive suspension

Drive efficiency is improved through a sealed bevel gear cover that keeps dirt out, while a three-piece aluminium prop shaft reduces rotating mass and friction. Compact suspension arms and lighter hub carriers contribute to sharper turn-in and more consistent handling lap after lap.

Setups and fine tuning for competition

Racers can tune handling via two types of hub carriers to change caster between 2 degrees and 4 degrees, plus adjustable rear toe settings using optional Tamiya mounts. These options let drivers dial in balance for different track surfaces and driving styles.

For experienced hobbyists focused on track performance, the TB Evolution IV provides a well engineered base with extensive setup choices and race-oriented components.