Yokomo S4-300UMA Precision Aluminium Upper Mount for YZ-4S  [S4-300UMA]

Yokomo S4-300UMA Aluminum Upper Sus Mount (L/R) for YZ-4S
Price:
CAD$38.84
Brand:
Yokomo
Model:
S4-300UMA
GTIN:
0639342188222
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Spares / Hop-ups - Yokomo - YZ-4 category
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Precision Aluminium Upgrade for YZ-4S

The Yokomo S4-300UMA Aluminium Upper Suspension Mount is engineered for the YZ-4S, supplying a strong, accurate replacement for stock components. The kit contains one left and one right piece and can be fitted to either the front or rear positions to maintain consistent handling across all corners.

Built for Longevity and Control

Made from CNC machined aluminium, this mount gives superior strength and wear resistance compared to standard parts. Tight tolerances preserve suspension geometry and help improve on-track stability during competitive runs. It is a sensible upgrade for racers focused on durability and sharper steering response.
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.

Will this mount fit all YZ-4S revisions?

This mount is made for the YZ-4S platform. Check your chassis revision and mounting points to confirm compatibility before fitting.

Is mounting hardware supplied with the part?

No mounting screws are included. You can reuse existing fasteners from your YZ-4S or fit suitable M3 hardware as required.

Can I use these on both front and rear arms?

Yes. The pair is machined to work on either the front or rear positions, but take care with orientation when installing.

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