Tamiya 18613 TRF-Racer Jr. Mini 4WD Kit - MS Chassis  [18613]

Introducing the Tamiya 18613 TRF-Racer Jr.

The Tamiya 18613 TRF-Racer Jr. sits in the Mini 4WD lineup as a finely engineered kit for hobbyists who like to dial in performance. It pairs a race-inspired silhouette with practical buildability, letting racers focus on setup and tuning.

Body Design and Visual Appeal

The clear polycarbonate shell provides a light but tough outer skin that helps top speed and control on the circuit. Styling borrows cues from full-size race cars, showing crisp lines that suit both display and competition. The unpainted body is ready for Tamiya Polycarbonate Paint so builders can personalise their finish.

Innovative MS Chassis Structure

The MS chassis is built as a three-part removable system to speed assembly and maintenance. Its mid-ship motor arrangement, using a double shaft motor, gives even power delivery across the car which aids traction and stability at high speed.

Customization and Upgrade Potential

• Motor Upgrades: Accepts a range of higher performance motors for more top end.
• Tire Options: Standard small diameter wheels are fitted, with alternative tyres available for different track surfaces.
• Gear Ratios: Comes with a 3.5:1 gear set that can be swapped for race-specific gearing.
• Chassis Adjustments: The detachable chassis pieces let you try different layouts to suit driving style.

Tuning and Track Compatibility

The package is set up to work across typical Mini 4WD track formats. Battery placement beside the motor lowers the centre of gravity and helps the car stay planted through corners and long straights. Advanced hobbyists will find plenty of scope to fine tune handling for competitive events.

The Tamiya 18613 TRF-Racer Jr. balances style and tunability, making it a strong pick for racers who want a modular platform to upgrade and race.