Tamiya 42384 TRF421 Race-Ready Touring Car Chassis Kit  [42384]

Tamiya 42384 TRF421 Touring Chassis Overview

The Tamiya 42384 TRF421 chassis kit advances the 1/10 touring car platform with focused design updates. Aimed at racers and serious hobbyists, it offers a balance of stability and responsiveness. The design process took two and a half years to refine key elements for circuit performance.

Performance Core: Drive and Suspension Design

At the core of the TRF421 is a refined drivetrain system. The front direct coupling and rear oil-filled gear differential work together to deliver smooth torque and maximise traction. Equal-length belts reduce pitching under load, and the longer A-arms compared with the TRF420X improve roll resistance and directional control.

Handling Improvements and Chassis Tuning

The TRF421 emphasises controllable handling. Drivers can choose between a stiff one-piece upper deck or a split layout to tune flex. A lower-profile bottom deck reduces clearance for improved cornering, while shorter dampers help lower the centre of gravity for more responsive steering.

Adjustability and Practical Race Features

Fine tuning options for camber, toe, and caster let drivers tailor the setup to track conditions. The quick-plate battery holder accepts shorty packs for secure mounting without adhesive, allowing quicker battery changes during events.

The Tamiya 42384 TRF421 chassis kit is designed for experienced racers and tuners who want detailed setup options and stable handling. Its modular approach supports a wide range of track conditions and driving techniques.