Kyosho MZW405 MR-03 Gyro Upgrade for Mini-Z Racers  [MZW405]

Upgrade MR-03 Handling with the Kyosho MZW405 Gyro Unit

The Kyosho MZW405 Gyro Unit is a practical upgrade for Mini-Z Racer MR-03 users who want crisper control. Built to fit cleanly into the MR-03 chassis, this gyro applies automatic steering and throttle correction to help keep the car tracking on slick surfaces such as wood or tile. By counter-steering faster than a driver can react, it helps the car feel more planted on the track.

Improved Balance and Steering Assist

After fitting the MZW405, the unit senses small imbalances and applies corrective inputs to both steering and throttle, enhancing straight-line stability and mid-corner control. This is especially useful when the rear end steps out, enabling the chassis to remain aligned with your intended line for smoother laps and fewer spinouts.

Setup and Calibration Advice

To get reliable results, power up the chassis while it is sitting still on a level surface so the gyro can complete its initial calibration without interference from vibrations. Expect the steering to make subtle adjustments once it detects chassis movement; that behavior is normal and indicates the gyro is active.

Tuning Options for Advanced Drivers

While the MZW405 works well with its factory settings, you can fine tune response curves by connecting your Mini-Z to a PC via the No.82080 I.C.S. USB Adaptor Set. Adjustments let you tailor sensitivity and behavior to match different track surfaces or personal driving style.