Performance MR-04 Roller Combo
Experience high-performance RC racing in a compact package with the Kyosho MR-04 RWD Mini-Z Chassis Set with KT-531P Transmitter. Designed for enthusiasts who want to personalize their Mini-Z racer, this set provides a versatile MR-04 RWD chassis paired with a responsive KT-531P pistol-grip transmitter. With compatibility for Auto Scale Collection finished bodies or unpainted bodies, this set is the perfect starting point for building a truly custom Mini-Z vehicle. Whether you’re new to the Mini-Z world or a veteran racer, this chassis delivers precision and performance out of the box.
About the MR-04
Advanced MR-04 Chassis for Improved Handling
The MR-04 chassis introduces multiple upgrades over its MR-03 predecessor, including a lower center of gravity and improved steering geometry. These enhancements provide sharper, more predictable handling and better cornering stability, essential for on-road racing. The W-MM (wide, mid-motor) configuration also gives users greater tuning potential, making it easier to optimize performance for different track layouts.
Ready for Customization
Ideal for drivers who want to create a one-of-a-kind Mini-Z, this set is fully compatible with Kyosho’s extensive range of Auto Scale Collection bodies and unpainted white kits. You can paint your body to match a real car or your own racing colors. This level of customization makes it perfect for both casual racers and competitive drivers who demand a personalized RC experience.
Reliable KT-531P Transmitter and Balanced Motor Power
Included in the set is the KT-531P pistol-grip transmitter, a user-friendly and reliable controller that makes the Mini-Z feel like a full-sized race car. The 130-class MZ9PB motor delivers balanced power suitable for both beginners and experienced racers. With a wide array of available Mini-Z option parts, you can continue upgrading the performance as your skills progress.
Features:
- Fourth-generation MR-04 chassis with W-MM configuration
- KT-531P pistol-grip style transmitter included
- Compatible with Auto Scale Collection and unpainted bodies
- Lower center of gravity for improved cornering
- Redesigned steering geometry for better control
- 130-class MZ9PB motor included
- Perfect for customizing with MINI-Z option parts
- Smooth rear-wheel-drive handling
- Requires only AAA batteries to operate
- Ideal for beginners and seasoned Mini-Z racers
Includes:
- (1) MR-04 RWD Chassis (W-MM configuration)
- (1) KT-531P Transmitter
- (1) MZ9PB 130-Class Motor (Installed)
- (1) Instruction Manual
Needed To Complete:
- (4) AAA Batteries for Chassis
- (4) AAA Batteries for Transmitter
- (4) Wheels and Tires
- (1) Compatible Mini-Z Body
Specifications:
| Scale | Mini-Z |
|---|---|
| Drive | RWD |
| Power Source | Electric |
| Length | – |
| Wheelbase | 4.02in (102mm) |
| Width | – |
| Height | – |
| Weight | Varies |
| Assembly Level | Kit* |
*Tech Note: RC Kits are an unassembled Remote Control Model that require assembly, racer selected electronics, and other racer provided items. Photos of assembled kit are for illustrative purposes only. For a complete list of needed items to drive this kit please see the list above.
This product was added to our catalog on July 29, 2025
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