Upgrade Parts

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 HG Aluminum Ball Race Rollers, 17mm Ringless

These are 17mm Aluminum ringless rollers. They are highly durable and offer silky smooth rotation.Includes:17mm Aluminum Rollers x2Small parts for attachmentFeatures:Built-in 520 ball bearings provide smooth roll.Compatible with Mini 4WD and Mini 4WD PRO...

2mm Aluminum Lock Nut Blue 5pcs.

These blue aluminum lock nuts provide secure and lasting attachment of rollers, mass dampers, etc. on your Mini 4WD car.Features:2mm Aluminum Lock Nut x5Lock nuts have a stylish Blue anodized finish.Compatible with all Mini 4WD and Mini 4WD PRO machines...

Hyper-Dash 3 Motor

JR Hyper-Dash 3 Brushed Motor

BB-01 Slipper Clutch Set

BB-01 Slipper Clutch Set

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 Basic Tune Up Parts

JR Basic Tune Up Parts, for MA Chassis

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...

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.

JR FRP Rear Brake Stay Set

The FRP plate in this set is an optimum size to allow attachment of the included brake sponge, while minimizing the chance of contact with parts like double rollers. Brakes are a vital racing item that stabilize your car before it jumps, which can make...

JR PRO Low Friction Roller Set

JR PRO Low Friction Roller Set

JR High Speed EX Counter Gear Gear Ratio 3.7:1

This gear set provides Mini 4WD racers with another setting option. It will give your machine a gear ratio of 3.7:1, which is faster than High-Speed Gear Set (Gear Ratio 4:1) and slower than Super Speed Gear Set (Gear Ratio 3.5:1).

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...

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.

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...