Tips & Analysis
Latest Articles
Most Club Racers Are Running the Wrong Gear Ratio
Final drive ratio is the most overlooked tuning variable in Mini-Z racing. Most club racers set it once and never touch it again.
MR-03 Steering Drift: How to Diagnose a Worn Servo Pot
Your MR-03 pulls left or right and trim won't hold. Work through this four-step checklist first. Two of the fixes cost nothing and one takes five minutes.
MR-04 Evo2 Steering Drift: Diagnose a Worn Servo Pot
MR-04 steering won't hold center and trim won't fix it. Check RF Mode on your Evo2 first. A mismatched protocol mimics hardware failure and is a free fix.
King Pin Flip on the Kyosho MR-03: Always Do It
The king pin flip costs nothing but a pair of flush cutters and five minutes. It is not a tuning preference. It is a friction fix, and your MR-03 needs it.
Step-by-step mods
Most Popular Guides
Best First Mini-Z Upgrades: 5 Mods That Matter
New Mini-Z owner? Do these 5 upgrades before anything else. Ranked by real-world impact per dollar, starting with the one mod every car needs first.
MR-03 ReadySet: First Upgrades Shopping List
Mini-Z MR-03 vs MR-04: Which Chassis to Buy in 2026
MX-01 Mod Path: From Box Stock to Technical Trail Rig
Mini-Z Pinion Gear Ratio Reference: 6T to 11T by Chassis and Use Case