Yokomo S4-300RFA Aluminium Rear Suspension Mount for YZ-4S Performance  [S4-300RFA]

Yokomo S4-300RFA Aluminum Rear Suspension Mount (Front) for YZ-4S
Price:
£12.92
Brand:
Yokomo
Model:
S4-300RFA
GTIN:
0639342188185
Condition:
Brand New
Write a review

Stiffer Aluminium Rear Mount for YZ-4S Control

The Yokomo S4-300RFA aluminium rear suspension mount strengthens the rear assembly of the YZ-4S. Designed to replace the original resin bush (S4-300BS), this aluminium unit improves toughness and allows for broader alignment options so you can fine-tune the car's balance for varied track conditions.

Fitment and Practical Gains

It fits Yokomo models such as B-YZ4SF, B-YZ4SF2-1, MOR-010, and MOR-020, offering a durable alternative to resin parts. The aluminium construction helps maintain consistent setup measurements under racing loads for fewer on-track surprises.
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.

How much harder is aluminium compared with the stock resin bush?

Aluminium is considerably less prone to compression and wear than resin, so it provides a firmer mounting point and more stable alignment settings over time.

Will using the S4-300RFA affect handling on wet or dusty tracks?

The mount itself does not change traction, but the reduced flex can require slight trim changes to suspension or shock settings to suit low-grip surfaces.

Any quick setup checklist after fitting the mount?

Recheck rear toe and camber, confirm fastener torque, and run a short test session to confirm balance before competitive runs.

Copyright © 2008-2025 rcjaz.co.uk All rights reserved