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

Yokomo S4-300UMA Aluminum Upper Sus Mount (L/R) for YZ-4S
Price:
£21.06
Brand:
Yokomo
Model:
S4-300UMA
GTIN:
0639342188222
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Spares / Hop-ups - Yokomo - YZ-4 category
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Competition Grade Upper Mount for YZ-4S

The Yokomo S4-300UMA Aluminium Upper Suspension Mount is produced for the YZ-4S to give a stiffer, more reliable alternative to factory parts. Supplied as a matched left and right pair, it can be mounted at the front or rear to maintain balanced performance.

Precision Fit and Improved Handling

Machined from quality aluminium, this mount resists wear and keeps suspension pickup points accurate over time. The precise fit aids predictable steering and consistent cornering under race conditions. It is a smart upgrade for anyone wanting finer control from their YZ-4S.
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 difficult is installation for a novice?

Installation is straightforward for most hobbyists. Use the original screw positions and moderate torque to avoid damaging aluminium threads.

Should I worry about corrosion or finish care?

Aluminium is relatively low maintenance. Keep parts clean and dry after wet runs and inspect for nicks that could affect fitment.

Will this improve lap times?

While a single part is not a guarantee of faster laps, the S4-300UMA helps maintain geometry and reduces flex, which can contribute to more consistent lap times when combined with proper setup.

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