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 24 guides
MR-04 Setup Guide: Getting the Most Out of Kyosho's Narrow Platform
The MR-04 EVO2 runs different from the MR-03. Here's how to dial in springs, T-plate, tires, and gyro for the narrower chassis.
Mini-Z FET Mod: The Complete Guide to MOSFET Replacement and Stacking
What a FET mod actually is, which Mini-Z platforms need it, how to do it safely, and when it's worth doing at all. The complete reference for club racers.
Mini-Z Suspension Setup: Springs, Droop, and Camber Explained
How to tune Mini-Z suspension for your track surface — spring selection, droop screw adjustment, camber, and what each change actually does to handling.
Mini-Z Bearing Upgrades: Ceramic vs Steel and Where It Actually Matters
Not all Mini-Z bearings are worth upgrading. Here's which positions actually change handling, ceramic vs steel trade-offs, and what to buy at every budget.
Mini-Z Racing vs Bashing — How to Set Up Your Car for Each
Racing and bashing demand different setups. Here's how to configure your Mini-Z for competitive laps or backyard fun.
RCP Track Setup: Layout, Surface, and Gear
How to set up an RCP Mini-Z track at home or at your club. Covers track tiles, layouts, barriers, timing systems, and surface prep.
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.
Mini-Z Body Compatibility Chart: Which Bodies Fit MR-03, MR-04, and MA-020?
Wheelbase, wheel offset, and width specs for every Mini-Z platform. Covers MR-03, MR-04, MA-020, and MX-01 — check fitment before you order a body shell anywhere.
Best Transmitters for Kyosho Mini-Z in 2026 (Ranked for Racing and Budget)
Syncro EX-6R, KT-432PT, and KO Propo EX-1 KIY compared. Features, price, and which radio is worth the money for RCP racing.
Best Mini-Z Upgrades Under $50 (All Platforms)
The smartest $50 you can spend on any Mini-Z platform. Bearings, tires, and chassis upgrades ranked by impact — MR-03, MA-020, MR-04, and MX-01.
5 Best First Kyosho Mini-Z Upgrades (Ranked by Impact Per Dollar)
New to Mini-Z? These 5 upgrades deliver the most performance per dollar on any platform. Bearings first, then tires, T-plate, gearing, and gyro — in this exact order.
Mini-Z Tire Guide: How to Pick the Right Compound for RCP, Carpet, and Tile
Compound numbers decoded, surface-by-surface baselines, and how to tune from driving symptoms. Covers MR-03, MR-04, and MA-020 tire selection.
Mini-Z Maintenance Schedule
A session-by-session Mini-Z maintenance schedule. What to check after every run, every 5 sessions, and every 20 — so nothing fails on race day.
Mini-Z Race Day Checklist: What to Bring and How to Prepare
Everything you need in your pit bag for a Mini-Z race night. Batteries, tools, spares, and the pre-race routine that keeps you off the DNS list.
Mini-Z Wheel Offset and Width Guide: What Fits Your Chassis
Wheel offset and width explained for every Mini-Z platform. What the numbers mean, what fits without rubbing, and how offset affects handling.
Mini-Z ESC Tuning: Punch, Brake, Drag Brake
What ESC tuning parameters actually do on track — punch control, brake strength, and drag brake settings explained practically for Mini-Z RWD and AWD platforms.
The Mini-Z Tools Guide: What You Actually Need
Most Mini-Z owners have the wrong tools or are missing one critical size. Here's exactly what to buy, in what order, and what you can skip.
Best Mini-Z Tires for RCP Tracks (2026 Buyer's Guide)
The definitive tire compounds to buy for high-grip RCP foam tracks. Stop guessing and start turning laps.
MR-03 vs MR-04 in 2026: Which Mini-Z Platform Is Right for You?
MR-03 has deeper parts support and lower cost. MR-04 corners faster out of the box. Side-by-side comparison of handling, parts, electronics, and cost to race-ready.
Mini-Z Tire Compounds by Surface
A practical tire compound system for Mini-Z racers. Baselines for RCP, carpet, and hard surfaces with symptom-based adjustments that actually work.
MR-04 Upgrade Guide: The Kyosho Mini-Z Narrow GT Platform
MR-04 upgrade path from stock to competitive — what's different from the MR-03, what parts don't cross over, and what to buy first.
How to Set Up a Gyro on Kyosho Mini-Z MR-03 and MR-04
Step-by-step gyro install for the MZW405 and DasMikro. How to set direction, dial in gain, and eliminate snap oversteer on carpet, RCP, and tile.
Mini-Z Brushless Conversion: Motor, ESC & LiPo Upgrade Guide (MR-03 / MA-020)
Step-by-step brushless conversion for Kyosho Mini-Z MR-03 and MA-020. Covers motor KV selection, ESC compatibility, LiPo wiring, and what actually changes on the track — with compatible parts available worldwide.
MR-03 T-Plate Setup: Flex Ratings, Shim Stacks, and Track-Ready Tuning
The T-plate is the primary tuning lever on RWD Mini-Z platforms. How to read what your car is doing and choose the right flex rating for your surface.