Rollers on Mini 4WD vehicles are an optional upgrade part for any Mini 4WD race car. Tamiya Mini 4WD kits come standard with plastic rollers that usually measure 13mm or smaller. By adding larger 19mm rollers your vehicle will have a wider stance, thereby maintaining greater speed around high speed turns, while bouncing less off the walled circuit.

These lightweight aluminum roller parts have a weight reduction of around 30% over standard aluminum rollers thanks to their shape and holes, allowing speedy performance! Inbuilt 520 size bearings provide smooth movement. These rollers can be used in the front or rear of any Mini 4WD machine.

This limited-edition Mini 4WD carbon reinforcement plate commemorates Japan Cup 2025. While the hole positions are the same as the popular FRP plate sold as Item 15243 (JR FRP Rear Plate for Super X Chassis), this plate features a new shape and the Japan Cup and Tamiya logos in mint green print. This rigid carbon fiber plate reinforces your car's bumper, helping it to survive big bumps and crashes, while also maximizing roller effects.