Yokomo S4-300UMA Machined Upper Suspension Mount for YZ-4S  [S4-300UMA]

Yokomo S4-300UMA Aluminum Upper Sus Mount (L/R) for YZ-4S
Price:
NZD$48.53
Brand:
Yokomo
Model:
S4-300UMA
GTIN:
0639342188222
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Or you may find similar product under the
Spares / Hop-ups - Yokomo - YZ-4 category
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CNC Machined Upper Mount for YZ-4S

The Yokomo S4-300UMA Aluminium Upper Suspension Mount is built specifically for the YZ-4S to replace weaker factory parts. Supplied as a left and right piece, the mount can be installed at the front or rear to keep handling consistent across the car.

Toughened for Club and Track Use

Crafted from high quality aluminium, this mount resists deformation and reduces wear under heavy running. Precision machining ensures tight fitment so steering and suspension geometry remain stable during hard laps. It suits hobbyists tuning for reliability and predictable handling.
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 change my suspension geometry?

If fitted correctly, the mount keeps intended geometry. Its precise machining helps maintain original alignment rather than alter suspension geometry.

Any special tools needed to install?

Standard hex drivers and a torque feel are sufficient. Use the same screw pattern as the original parts and avoid over tightening aluminium threads.

How should I maintain these mounts?

Inspect for burrs or thread wear after heavy running. Clean mounting faces and check fastener torque periodically to keep the YZ-4S handling sharp.

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