Upgrade Parts

FRP Wide Front Plate

This durable FRP front stay needs no body modifications when being fitted to any fully-cowled Mini 4WD machine. This is a great upgrade part that even beginners can use with ease!Features:This item has attachment points for 9, 13 or 19mm rollers...

JR AR Chassis Basic Tune Set

This basic Tune-Up parts set includes fundamental Mini 4WD tuning options that you can use for your AR Chassis. The set includes mass dampers, front and rear FRP roller plates, stabilizer heads and 13mm rollers.

JR Plastic Roller Set, 13mm, Long Low Friction

JR Plastic Roller Set, 13mm, Long Low Friction

Side Mass Damper Set MA Chassis

Side dampers perform a key role in limiting "bounce" after your car has landed on a Mini 4WD racing circuit. This set features newly-designed FRP plates to attach to the side of the MA chassis, plus it includes block weights to fine tune the mass damper...

JR FRP Reinforcing Plate Set, Short

By installing these plates at the sections between the center and front/rear units of a MS chassis, the overall chassis rigidity will further improve and help maintain roller attachment angles.These plates can also be attached to side stays of Super X...

JR Brake Sponge Set 1/2/3mm Blue

This is a low-friction brake sponge set for Mini 4WD race cars. It comes with 3 thicknesses. It gives a milder brake effect than the Red sponge set sold in item 15492 JR Brake Sponge Set. Use the 3 thicknesses for different places on your Mini 4WD car!...

JR Aluminum Motor Support

More positive motor alignment. Assures the maximum motor power during jumps and wall contact. Radiates motor heat for cooler running.

JR Front Under Guard

Mini 4WD users often equip their vehicles with front aluminum FRP plates for a wide roller setting. This enhancement often leads to user"s vehicles getting stuck on the course fence. Tamiya designed this underguard to block the gap and improve your...

JR High Speed EX Gear Set

There are currently two gear ratios available for Mini 4WD racers to use on their MS chassis machines, 4:1 and 3.5:1. This means that for a particular circuit sometimes the former may be too slow while the latter may be too fast. To solve this situation...

RC F Parts: 58372

RC F Parts: 58372 (Ford F350 High-Lift)

JR PRO High Speed Gear Set

Offering the high speed gear included with Mini 4WD PRO Nitro Thunder and Nitro Force as a separate grade up part to widen setting choices. Mini 4WD PRO racers equipped with small wheels and super speed 3.5:1 gear may experience dulling of acceleration...

JR MS Chassis Brake Parts Set

When racing your Mini 4WD, not only do you require top speed throughout the race, you also need a way to keep your car on the track at lane change and slope sections. These brakes which have a sponge sheet attached to their lower sections that slightly...

JR Gold Plated Terminal Set

Gold plated terminal connectors are rust-resistant and highly conductive of electricity. These terminals stand up well to the rigors of racing, and will improve efficiency of battery power transmission for stable and reliable Mini 4WD.

JR Small Dia Carbon Wheels With White Arched Tires

These carbon fiber-reinforced wheels will provide racers with another option for customizing their machines.

JR Rein EE Double Roller Stay

Rear Double Roller Stay which features high rigidity and durability against shocks and crashes.