On-Road Diff Preload Adjusters Compatible With On-Road Setups - Yokomo ZS-508S  [ZS-508S]

Price:
AUD$2.29
Brand:
Yokomo
Model:
ZS-508S
GTIN:
3888
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Tuning-focused adjuster screw notes

The Yokomo ZS-508S Differential Adjusting Screws are an RC replacement adjuster intended for on-road differential tuning and routine maintenance. They perform as the threaded component that sets preload and alters torque distribution inside the differential, delivering a repeatable interface for setup refinements.

These screws fit into matching differential housings or carriers as a substitute for the original adjuster. Installation requires access to the diff internals, removal of the factory part, and careful reassembly while ensuring correct gear alignment and adequate lubrication. Use small hand tools and moderate force to seat the screws to avoid stripping threads.

For setup work, these adjusters let you change preload and engagement gradually; small rotations will influence behaviour notably on grippy surfaces. Combine changes with on-track observation, and always check that gear mesh and bearings run smoothly after refit. Confirm compatibility with your differential before fitting to avoid interference.
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.

What is the best method to tune using these screws?

Adopt a methodical approach: make small, repeatable turns, test on the same track section, and log changes. Tuning in small increments avoids over-correction and helps isolate the desired effect.

How should I inspect the diff after fitting?

After reassembly, spin the diff to confirm smooth gear mesh and bearing movement, check for lubricant contamination, and verify there is no binding or play introduced by the new adjuster.

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