Upgrade Parts

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 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.

JR Mass Damper Set

This Mass Damper Set superbly demonstrates its excellent stabilizing qualities on Mini 4WD machines on technical courses with a lot of banked and raised sections. 3x25mm and 3x30mm stainless steel screws included. You can install these dampers at either...

JR Stabilizer Ball Cap, Bright

Further customize your MINI 4WD with these eye catching stabilizer ball caps. Each packcomes with 5 different colored caps x 2 (10 in total) and balls x 4 (20 in total) respectively.Can be used with MINI 4WD cars.Includes:A rubber tube for attaching...

JR Mini 4WD G-18 Gear, Yellow (10pcs)

These are spare Mini 4WD gears. They are handy because they are useful for those who find that tuning up their Mini 4WD car takes its toll on their gears from frequent running.Features:Yellow G-18 Gear x10Compatible with Mini 4WD machines.Yellow G-18...

12mm Hex "DOT" Machined Aluminum Hubs (2) "4 DOT 10mm"

12mm Machined Aluminum Hex Hubs w/ Hardware, 10mm Offset (2)

12mm Hex "DOT" Machined Aluminum Hubs (2) "3 DOT 7mm"

12mm Machined Aluminum Hex Hubs w/ Hardware, 7mm Offset (2)

XPT3 LCG Transmission - Black

REEFS XPT3 LCG Transmission - Silver

12mm Hex "DOT" Machined Aluminum Hubs (2) "1 DOT 2mm"

12mm Machined Aluminum Hex Hubs w/ Hardware, 2mm Offset (2)

Universal Servo Mounting Tabs

Universal Servo Mounting Tabs - CNC Aluminum w/Hardware

XPT3 LCG Transmission - Silver

REEFS XPT3 LCG Transmission - Black