Bearings Upgrades

Why it matters

Stock Mini-Zs use injection-molded plastic bushings that create rolling resistance and wear quickly. Ball bearings eliminate drag, free up the drivetrain, and are the single mod that belongs on every car before anything else.

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Kyosho $12–$18

Mini-Z Ball Bearing Set (7pcs)

MR-03MA-020

OEM replacement bearings. Drop-in fit, no modification needed.

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Sortafast $22–$28

Hybrid Ceramic Bearing Set — MR-03

MR-03MA-020

Ceramic balls, steel races. ABEC 7 rated. Lower friction than steel, no rust.

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ACER Racing $35–$45

Full Ceramic Bearing Kit (8pcs)

MR-03MA-020

Full ceramic races and balls. Lowest rolling resistance available. Fits MR-02/MR-03/MR-015.

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Yeah Racing $18–$26

MR-04 Ball Bearing Full Set

MR-04

Complete bearing set sized for the MR-04 drivetrain. Not interchangeable with MR-03 sets.

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Kyosho $14–$20

MX-01 Replacement Parts & Bearings

MX-01

Crawler-specific bearing sizes for the MX-01 portal axle drivetrain.

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Related Guides

beginner

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.

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