Tamiya 18083 JR Shirokumakko - Polar Bear Super-II Mini 4WD Kit  [18083]

Quick look at the Tamiya JR Shirokumakko 18083

The Tamiya JR Shirokumakko 18083 brings a playful polar bear motif to the Mini 4WD family while keeping racing performance in mind. Built around the Super-II chassis, this kit balances charm and tunability for club racers and casual builders alike.

Styling and bodywork

The JR Shirokumakko borrows the open-top lines of the Terra Conqueror, resulting in a low, aerodynamic silhouette. A small polar bear driver figure adds character, and the ABS body offers durability without excess weight for high speed runs.

Super-II chassis build and tuning

The Super-II chassis is moulded in light blue ABS and is prized for its strength and mod friendliness. Its layout supports common Mini 4WD upgrades, letting you tune balance and traction for different track layouts.

Tuning options and upgrade paths

Owners can explore a range of performance tweaks to suit race conditions:

• Motors: Fits standard 130 single-shaft motors so you can choose higher rpm or torque units depending on the course.
• Tires and Wheels: Comes with gold-plated wheels and blue tyres; swapping to low-profile tyres can reduce drag and raise top speed.
• Gears: Try different gear ratios to dial in acceleration versus top speed for each circuit.
• Dampers: Installing dampers will improve stability through fast corners and jumps.

Assembly and setup tips

This kit uses snap-fit assembly to make building straightforward for newcomers, while offering room for experienced hobbyists to add reinforcements or custom parts during setup.

The Tamiya JR Shirokumakko is a fun collector piece that also performs on the track. With the Super-II chassis it is easy to upgrade and tune for competitive Mini 4WD racing.