Yokomo BB-74-2A Precision 4x7x2.5mm Bearings (2 pcs)  [BB-74-2A]

Yokomo BB-74-2A 4x7x2.5mm Ball Bearing (2 pcs.)
Price:
NZD$10.58
Brand:
Yokomo
Model:
BB-74-2A
GTIN:
0639342205141
Condition:
Brand New
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Upgrade Drivetrain Smoothness with Yokomo BB-74-2A

For hobbyists seeking consistent rolling action, the Yokomo BB-74-2A ball bearings deliver predictable performance. These 4x7x2.5mm metal bearings are built to match common Yokomo chassis needs and support cleaner rotation under load.

Suitable Chassis and Applications

These bearings are compatible with models such as the MRTC-BD919 and MRTC-BD10 series, so they suit both race-oriented builds and casual setups. Install them when refreshing wheel hubs or gearbox assemblies.

Care, Lubrication and Longevity

Keep bearings free from grit and apply a small amount of quality lubricant to extend service life. Regular checks after wet or muddy runs will catch early wear and keep handling consistent.
Remark :
Due to limited stock availability, please notice that some Yokomo 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.

Are these sealed bearings or open metal types

These are standard metal ball bearings. If you require sealed units for heavy contamination, search for bearings explicitly sold as sealed or shielded.

Which lubricant works best for these bearings

Light oil or a fine bearing grease designed for RC use is common. Use minimal lubricant to avoid attracting dust while maintaining smooth rotation.

Can I drop these into older Yokomo models

Check that the 4x7x2.5mm size matches the axle and hub tolerances on older models. Many classic Yokomo chassis accept these dimensions, but confirm fitment before pressing them in.

Is press fitting required for installation

A light press fit is typical. Use a bearing driver or a socket sized to the outer race to avoid damaging the inner race during installation.

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