Upgrade Parts

JR Setting Gear Set FM-A Chassis

Tune your FM-A chassis by altering the gear ratio. These gears are an easy way to increase the speed of your machine. This set includes gears to achieve five different ratios (3.5:1, 3.7:1, 4:1, 4.2:1 and 5:1)! 1.4mm Hollow Lightweight Propeller...

Hyper Dash Motor PRO

Made for the advanced Mini 4WD racer, this high-performance Mini 4WD PRO motor really shines on winding, twisting circuits and features silver carbon motor brush for maximum electricity conduction. Must be given regular maintenance to ensure optimal...

FRP Wide Rear Plate

This FRP plate is specially designed for the Mini 4WD AR chassis and features holes to enable the installation of 9mm, 11mm, 13mm, 17mm, and 19mm rollers within the standard Mini 4WD race regulations.

JR Mini 4WD PRO G-22 Gear

These are spare part gears for Mini 4WD machines. They are a handy purchase for those who find that tuning up their Mini 4WD PRO car takes its toll on their gears. - Pink G-22 Gear x10 - Compatible with Mini 4WD PRO machines.

Brake Sponge Set 1/2/3mm White

Brake-sponges help stop your Mini 4WD car from leaving the track. This set includes three thicknesses of the same type of brake sponge, allowing easy adjustment of your brake settings. 2mm sponge comes in a single sheet to help differentiate thicknesses...

JR PRO FRP Support Plate

Install this FRP Support Plate Set to better counter the pitch forces that a Mini 4WD car experiences during corners and ensure roller contact with the track walls for greater stability. The plates can be easily installed on either the nose or tail units...

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 3-Spoke Ball-Race Rollers (17mm/Aluminum)

Lightweight aluminum roller with three spokes. Rubber rings are included for shock absorption.

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 Wide Front Sliding Damper

Give your Mini 4WD machine the power to adapt to a wide range of course styles and layouts! This sliding damper allows more stable running as it absorbs obstacles like gaps in the track fence and provides more cushioned landings.Features:Plate is made...

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 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...