Upgrade Parts

JR Plastic Double Rollers, Low Friction Red/Blue 13-12mm

These are a variation of the plastic rollers in Item 15457, now with rubber rings for smooth rotation. Double rollers are a super tune-up choice for beginners in particular, as they are simple to fit and provide smooth, stable cornering with the smaller...

JR Torque-Tuned 2 Motor

Tuning your car can make the world of difference in Mini 4WD racing, and the motor is a great place to start. This motor is aimed at racers who are new to tuning their models, and can be used to alter your machines performance as the track requires. The...

JR Slimline Mass Damper Set

JR Slimline Mass Damper Set

JR Rear Brake Set

This Brake Set designed for the AR Chassis includes a brake plate, adapters, two kinds of brake sponges, and 3 types of spacers. By using the adapters and spacers, brake parts attachment positions can be easily changed, allowing fine setting adjustment...

Hyper-Dash 3 Motor

This is the Hyper Dash 3 motor and it is a part of the popular Hyper-Dash series. Silver/carbon mix material brushes offer an excellent balance of performance and improved reliability that will help boost your chances of winning the race, whether it is...

JR Aluminum Ball Race Rollers, 13mm Ringless

These lightweight 13mm Aluminum Ball-Race Rollers feature superb durability and are equipped with 520 ball bearings to offer smooth rotation. In addition, these rollers have less friction against the course walls and can be used for both front and rear...

BB-01 Slipper Clutch Set

Slipper clutches are an essential tuning part in off-road 2WD vehicles. They help protect the drivetrain from sudden surges and help tune the vehicle on slippery surfaces. This slipper clutch is specific to the BB-01 off-road chassis...

JR Setting Gear Set for AR Chassis

This set conveniently includes gears that are compatible with AR chassis Mini 4WD machines, allowing you to adjust the gear ratios of your machine according to the track layout.

JR Rear Skid Roller Set

This set uses rollers to brake MS and FM-A chassis cars if the nose comes too far off the track, slowing the car slightly and getting it back in shape. -Smoke color polycarbonate. -Paired with two low-friction POM 8mm rollers (White) to provide the brake...

HG Carbon Wide Front Plate 1.5mm

This is a 1.5mm-thick carbon fiber front plate which provides superior rigidity to a mini 4WD chassis, keeping the car's form and lessening time loss on the race track. The parts are marked with a printed Tamiya logo and roller diameter positions...

JR LG DIA Stabilizer Head Set, 17mm

These large diameter rollers add stability to your Mini 4WD machine. They work together with the 19mm rollers to provide your machine with increased stability during cornering.

HG Carbon Reinforcing Plate for 13/19mm Roller

Screws and washers included.Screws and washers included.

JR 13mm Roller Ball Bearing

Make sure that your rollers are running at top efficiency by fitting them with these ball bearings. Made from steel, they will provide smooth progress along the track, in conjunction to superior reliability. Set Contents 13mm Ball Bearings x2 2x8mm...

2mm Cap Screw Set

These durable screws are used to replace standard stainless steel screws that are used to secure parts such as mass dampers and guide rollers to offer greater rigidity to these sections of your Mini 4WD racer.

JR Mini 4WD Basic Tune Up Set

This Basic Tune-Up Set is intended for novice Mini 4WD users and conveniently includes parts for fundamental modifications which are recommended by our Mini 4WD designers.