Yokomo S4-300RRA Aluminium Rear Suspension Mount - Precision Edition  [S4-300RRA]

Yokomo S4-300RRA Aluminum Rear Suspension Mount (Rear) for YZ-4S
Price:
£15.30
Brand:
Yokomo
Model:
S4-300RRA
GTIN:
0639342210091
Condition:
Brand New
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Refine YZ-4S Rear Geometry with the Yokomo S4-300RRA

The Yokomo S4-300RRA Aluminium Rear Suspension Mount is a high quality upgrade that replaces the stock resin bush on the YZ-4S. Manufactured from aluminium for enhanced rigidity, this mount enables a wider range of alignment adjustments to suit competitive driving.

Aluminium Benefits for Racing

Aluminium components are chosen for their consistent stiffness and endurance under load, which helps sharpen handling responses. The S4-300RRA improves setup precision so drivers can achieve more stable cornering and consistent lap times.

Chassis Compatibility and Fitting

This rear mount is compatible with several Yokomo chassis variants including B-YZ4SF, B-YZ4SF2-1, MOR-010, and MOR-020. It installs using the existing mounting points, making fitting straightforward with basic tools and minimal changes to your existing setup.
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.

Is the alloy mount a direct replacement for the resin part?

Yes, the S4-300RRA fits in place of the resin bush and uses the stock fixing points for a direct swap.

Will this change how the car behaves on bumpy tracks?

The increased stiffness can make the rear end feel firmer over rough sections, which many drivers use to improve consistency; some shock tuning may be needed to rebalance the car.

What basic checks should I perform after fitting?

After installation, verify all bolts are secure, recheck rear alignment settings, and do a short test session to confirm the handling changes are to your preference.

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