Yokomo S4-300RRA Aluminum Rear Suspension Mount - Off-Road Favourite  [S4-300RRA]

Yokomo S4-300RRA Aluminum Rear Suspension Mount (Rear) for YZ-4S
Price:
AUD$31.21
Brand:
Yokomo
Model:
S4-300RRA
GTIN:
0639342210091
Condition:
Brand New
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Precision Rear Hinge Upgrade for Your YZ-4S

The Yokomo S4-300RRA Aluminum Rear Suspension Mount replaces the standard resin bush on the YZ-4S to provide a more robust mounting point and increased tuning range. Built from tough aluminum, this part helps stabilise the rear end for predictable handling across varied track conditions.

Advantages of Aluminum Parts

Aluminum offers a strong, stable platform that limits unwanted flex while keeping weight manageable. The S4-300RRA lets you fine tune suspension geometry with better repeatability, which is useful when testing different setups or tyres.

Installation Notes and Compatibility

This mount is designed to fit a number of Yokomo chassis, including B-YZ4SF, B-YZ4SF2-1, MOR-010, and MOR-020. Installation uses existing hardware locations so you can upgrade quickly with common tools and minimal teardown.
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.

Does fitting this affect ride height or geometry?

The mount is designed to retain factory geometry but allows finer alignment adjustments; major ride height changes are not expected from the swap alone.

Is any special maintenance required for the aluminium mount?

Regular checks of mounting screws and fasteners are recommended; apply threadlock where appropriate and inspect for wear after heavy running.

Can I pair this with other upgrades?

Yes, the S4-300RRA works well with upgraded arms or hinge pins to create a more race-focused rear end setup.

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