Upgrade Parts

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.

JR Basic Tune-Up Parts FM-A Chassis

This handy option set works in conjunction with the FM-A chassis kit, the Rowdy Bull (Item 18707) and other kits based on the FM-A chassis. Tuning up your Mini 4WD car can be a daunting prospect if you don't know where to start. Therefore, this his set...

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 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...

JR Wide Rear 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 Round Hole B/B Pro MS Compatible

Center race of the ball bearing is round. Used in gear box. Provides smooth motor rotation.

JR Slide Damper Spring

This set of spare parts includes 2 types of springs which were a part of Items 15139 and 15198. This item can be used to adjust the performance of a mini 4WD vehicle's sliding dampers. Front Sliding Damper Springs x4 Rear Sliding Damper Springs x4

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 60mm Reinforced Shaft

These black shafts are made from 60C steel, and have a high concentration of carbon. Features a lustrous black nickel plating. Compatible with VS, TZ-X, TZ, FM, Super-1 Type 1,3,5, and Mini 4WD PRO chassis cars.

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 Steel Bearing 4pcs Fluorine Coated

These 620 sized Fluorine Coated Steel Bearings for wheel axle use are an excellent way to upgrade your machine. They offer excellent qualities such as low resistance, high precision, and excellent durability making them a must-have for all Mini 4WD...