Kyosho MZ404B Mini-Z MR-03 Servo Gear Replacement Set  [KY-MZ404B]

Kyosho MZ404B - Servo Gear Set(for MR-03)
Price:
NZD$11.03
Brand:
Kyosho
Model:
KY-MZ404B
GTIN:
4548565477012
Condition:
Brand New
Quantity Discount
Unit Price You Save
2 $9.88 each $2.29 or 10%
3+ $9.40 each $4.89 or 15%
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Reliable Servo Gear Replacement for Mini-Z MR-03 with Kyosho MZ404B

The Kyosho MZ404B gear set has been produced to replace worn servo gears in the Mini-Z MR-03 family, helping to regain crisp steering response and smooth servo movement. Install these parts to maintain consistent handling during practice laps or casual running.

Which Models It Suits

This kit is aimed at MR-03 RWD variants and is suitable for hobbyists who need a simple swap to restore correct steering behaviour. The MZ404B is intended to drop into the existing layout so you can be back on the layout quickly.

Simple Installation Notes

Remove any grease build-up and debris from the servo prior to fitting to prevent premature wear. Align the gears and set the mesh carefully, then verify travel limits and recentering before full throttle use. Periodic checks will keep the system reliable.
Remark :
Due to limited stock availability, please notice that some Kyosho items may have to order from the factory and the ready time is around 4-6 weeks. Customer purchases the item is assumed to accept the waiting time which allows us to order directly from the manufacturer if the item is out of our warehouse.

Does the Kyosho MZ404B need any hobby-grade tools to fit?

Basic tools like a small screwdriver and needle-nose pliers are usually sufficient. A feeler gauge for mesh and a clean workspace make the job easier and faster.

How do I check gear wear on my MR-03?

Inspect teeth for rounded edges or missing material and check for excessive play on the servo output shaft. Any rough movement or noise under load suggests replacement.

Will fitting new gears change steering feel immediately?

Yes, installing fresh gears normally tightens steering feel and improves centering. After fitting, run a short test session and fine tune mesh and trim as needed.

Is lubrication recommended after installation?

Light, appropriate lubrication on non-mating surfaces can help, but avoid over greasing the mesh area to prevent attracting dirt that causes wear.

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