Yokomo S4-S3OS Lightweight O-Ring Set for 13mm Big Bore Shocks  [S4-S3OS]

Yokomo S4-S3OS O-Ring Set (2set) for SO/MO2.0 (Light Weight)
Price:
CAD$5.05
Brand:
Yokomo
Model:
S4-S3OS
GTIN:
639342222032
Condition:
Brand New
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Fine Tune Shock Response with Yokomo S4-S3OS

The Yokomo S4-S3OS O-Ring Set includes two bottles of high quality O-rings made for 13mm big bore shocks and matched to the SO/MO2.0 chassis family. These rings reduce friction and strengthen seal integrity to give a cleaner, more consistent suspension action while protecting internal components during intense track use.

Why Racers Choose These O-Rings

  • Lightweight Design: Made to trim unsprung weight and sharpen shock reaction without losing structural strength.
  • Enhanced Durability: Manufactured from a robust compound to resist wear under repeated cycles.
  • Compatibility: Sized specifically for Yokomo SO/MO2.0 chassis so you get a snug fit and reliable sealing.
  • Performance Boost: Lower internal drag yields smoother damping and more predictable tuning results.
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 these O-rings work with any 13mm big bore shock on SO/MO2.0 cars?

The S4-S3OS set is designed for 13mm big bore shock assemblies used on SO/MO2.0 platforms. Check your shock inner diameter to confirm compatibility before fitting.

What is the best way to install these O-rings without stretching them?

Use a soft pick or fine tweezers and fit the rings dry first to check seating. Lubricate lightly with shock oil only after they are correctly seated to avoid twisting or tearing.

How frequently should I replace the O-rings during regular club racing?

Replace them whenever you notice oil seepage, rough damping, or after several hard race weekends. Regular inspection between events helps maintain consistent shock feel.

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