Upgrade Parts

JR Classic Tune-Up Parts Set, Vol. 1

This is a very special limited-edition re-release of a classic Mini 4WD Tune-Up set that was originally released in 2007. It includes a bonus sticker set that was given to contestants that participated in Japan Cup 1989!Includes:Item 15002: Wing & Duct...

JR HG Mass Damper Set w/Ball Connectors

Mass dampers are an essential tuning part on circuits with elevation changes, and these are attached to the car using ball connectors. The adjusters are molded with fiber-glass material for toughness, and the included carbon fiber stay allows attachment...

JR HG Carbon Multi Roller Setting Stay (3mm) Asia

To commemorate the Tamiya Mini 4WD Asia Challenge (TMAC), this limited-edition product takes Tamiya's popular HG Carbon Multi Roller Setting Stay (3mm) (Item 95258) and adds green color Asia Challenge graphics to celebrate the occasion.Includes:HG Carbon...

HG Carbon Reiforcing Plate (1.5mm) J-Cup 2025

This limited-edition Mini 4WD carbon reinforcement plate commemorates Japan Cup 2025. While the hole positions are the same as the popular FRP plate sold as Item 15242 (JR FRP Front Plate for Super X Chassis), this plate features a new shape and the...

JR Short Mass Damper Block, 8x8x14mm, Silver, LTD

Mass dampers are a common upgrade for Mini 4WD cars. They add stability by helping to absorb impacts after a jump. This short mass damper version parts set offers a shorter alternative to the otherwise longer 32mm block set. They measure 8x8x14mm giving...

JR HG Lightweight 13mm Tapered Aluminum Ball-Race Rollers

These HG 13mm Tapered Aluminum Ball-Race Rollers (Ringless) feature an innovative design that utilizes holes to restrict extra weight. Their tapered shape helps the car get back on the course when it goes over course.Includes:Lightweight 13mm Tapered...

JR MS Chassis Set, Fluorescent Orange, Mini 4WD Station

These are alternate color (fluorescent orange) chassis parts that can be used on MS Mini 4WD chassis cars. Use it to make your machine stand out in a crowd!Features:MS chassis set (N-02, T-01 and Center units, and A parts) (Fluorescent orange) x1Features...

JR Mini 4WD Multipurpose Tape, 20mm Width/Red

This is a 20mm width versatile multipurpose tape. Use it to secure batteries and other components of your Mini 4WD race car, or even for purely cosmetic purposes. The possibilities are endless!Features:Greater width is perfect for uses such as covering...

Mini 4WD Acrylic Setting Board (Smoke)

Compact and lightweight, this handy acrylic version of the trusty Mini 4WD Setting Board is a great addition to your Mini 4WD collection. In addition to being a reliable work surface, it also features plenty of measurements useful in your day-to-day Mini...

HG Carbon Rear Multi Roller Setting Stay, 1.5mm J-Cup 2024

This limited-edition carbon fiber rear multi roller setting stay (1.5mm) commemorates Japan Cup 2024. The item is the same shape as Item 95145; however, this item includes the Japan Cup and Tamiya logos in pink print.Features:1.5mm-thick Carbon Rear...

JR HG 1.5mm Carbon Multi Roller Setting Stay J-Cup 2024

This limited-edition carbon fiber multi roller setting stay (1.5mm) commemorates Japan Cup 2024. The item is the same shape as Item 95144; however, this item includes the Japan Cup and Tamiya logos in pink print.Features:1.5mm-thick Carbon Multi Roller...

HG 19mm Tapered Aluminum Ball- Race Rollers (Ringless/Green)

This is a limited-edition color variation of Item 95436 HG Alum Ball-Race Rollers 19mm Tapered/ Ringless. Tapering the rollers encourages the car to stay on the course when it mounts the walls, with the aim of raising your race completion...

JR HG Aluminum Ball - Race Rollers (2)

These are tapered versions of the smooth-spinning ball bearing rollers from Item 15464 JR HG Alum Ball-Race Rollers 19mm (Ringless). Tapering them encourages the car to stay on the course when it mounts the walls, with the aim of raising your race...

JR LW Plastic Spacer Set Purple

This set is a plastic version of the aluminum spacers from Item 15473 JR Aluminum Spacer Set - 12 / 6.7 / 6 / 3 / 1.5mm. Each is around 40% lighter than its aluminum counterpart. Their low friction plastic minimizes time loss from contact with course...

JR HG Aluminum Ball-Race Rollers 13mm Tapered

These are Tamiya tapered ball race rollers for MINI4WD race cars. Tapering them encourages the car to stay on the course when it mounts the walls, with the aim of raising your race completion rate!Features:13mm Tapered Aluminum Ball-Race Rollers...