MR-03
Indoor RCP track racing
Kyosho's flagship rear-wheel-drive racing platform. The most popular Mini-Z for indoor track competition.
The MR-03 is where serious Mini-Z racing happens. Its rear-wheel-drive layout rewards precision driving, and the tuning depth — from T-plate stiffness to motor choice to gyro sensitivity — gives experienced drivers a lot to work with.
Guides for the MR-03 9 guides
Mini-Z Gyro Installation and Setup Guide
A gyro transforms RWD Mini-Z handling. Here's how to install it correctly, set the direction, and tune the gain for your track.
Mini-Z Brushless Conversion: Motors, ESCs, and LiPo
Everything you need to go brushless on the MR-03 or MA-020. Motor sizing, ESC compatibility, LiPo integration, and what to expect on the other side.
Mini-Z T-Plate Setup: How Stiffness Shapes Handling
The T-plate is the primary tuning lever on RWD Mini-Z platforms. Here's how to read what your car is doing and choose the right flex rating for your surface.
Mini-Z Battery Guide: NiMH, LiPo, and What to Run
Consistent voltage means consistent lap times. The full breakdown on NiMH vs LiPo for Mini-Z, which cells to buy, and how to charge them correctly.
Your First 5 Mini-Z Upgrades (And What Order to Do Them)
Every Mini-Z owner ends up at the same place: the stock car is fun, but you know it can be better. The question is always where to start. We rank the first five mods by impact-per-dollar, starting with the one upgrade every single Mini-Z should have.
Mini-Z Transmitter Upgrade Guide
The stock transmitter is your biggest limitation that isn't on the car. Here's what to upgrade to and which features actually matter for Mini-Z.
MR-03 Platform Upgrade Guide
The MR-03 is Kyosho's flagship 1/28 rear-wheel-drive platform. Here's how to build one that actually performs.
Best Tires by Surface and Driving Style
Compound, width, and offset selection for RCP, carpet, and hardwood. Stop guessing and start gripping.
Mini-Z Body Compatibility Guide
Wheelbase, offset, and width explained. Know before you buy so the body you want actually fits your chassis.