MR-04
Indoor RCP racing, GT-style builds
Kyosho's narrow-chassis RWD platform built for GT-style bodies. More nimble than the MR-03, with a tighter track width and narrower footprint.
The MR-04 EVO is Kyosho's answer to narrow GT body shells that don't proportion well on the wider MR-03 chassis. The narrower track and lower ride height give it a more scale-accurate stance, and the shorter wheelbase options make it well-suited to sports car bodies. The core upgrade philosophy is the same as the MR-03 — bearings first, then T-plate, then motor — but parts are not fully interchangeable between the two platforms. Confirm compatibility before ordering.
Guides for the MR-04 8 guides
MR-04 Platform Upgrade Guide
Kyosho's narrow GT chassis brings a different footprint to Mini-Z racing. Here's the upgrade path from stock to competitive.
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.
Best Tires by Surface and Driving Style
Compound, width, and offset selection for RCP, carpet, and hardwood. Stop guessing and start gripping.