Tamiya 42384 TRF421 Competition Touring Chassis Kit  [42384]

Overview of the Tamiya 42384 TRF421 Touring Chassis

The Tamiya 42384 TRF421 chassis kit advances 1/10 touring car design with deliberate refinements for racers. Intended for serious hobbyists, it combines controllable handling with adaptable setup options. The development process took two and a half years to fine tune its core systems.

Drivetrain and Suspension Engineering

The TRF421 packs a coherent drivetrain layout to maintain smooth power delivery. A front direct coupling works alongside a rear oil-filled gear differential to secure traction. Equal-length drive belts reduce unwanted pitching, and the longer A-shaped arms compared with the TRF420X enhance roll control and steering precision.

Handling Enhancements and Chassis Layout

Designed for balance rather than pure aggression, the chassis offers a choice of one-piece or two-piece upper decks to adjust flex. The redesigned lower deck lowers ride height for tighter cornering lines, and shorter dampers lower the centre of gravity for more immediate steering feedback.

Setup Options and Battery Convenience

Extensive adjustability for camber, toe and caster lets tuners adapt to different track surfaces. The quick-plate battery holder accepts shorty packs, avoiding tape mounts and speeding up battery swaps during meetings.

The Tamiya 42384 TRF421 chassis kit is aimed at experienced racers who require detailed tuning capability and consistent handling. Its modular build supports upgrades and focused setup work.