Yokomo BD-S4 22.5mm Performance Shock Cylinder for BD7 BD5  [BD-S4]

Yokomo BD-S4 Shock Silinder (22.5mm) for BD7/BD5
Price:
CAD$13.91
Brand:
Yokomo
Model:
BD-S4
GTIN:
3888
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Or you may find similar product under the
Spares / Hop-ups - Yokomo - BD7 category
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Upgrade Handling on BD7 and BD5 with the Yokomo BD-S4

The Yokomo BD-S4 shock cylinder increases oil capacity over earlier units to give BD7 and BD5 chassis more consistent behaviour at speed. Its fluorine finish lowers internal friction, producing smoother, more predictable suspension movement on fast tracks.

Main Advantages of the Yokomo BD-S4

  • Higher Stability: The increased internal volume helps the car stay composed during high speed runs.
  • Fluorine Finish: A low friction surface reduces stiction for crisper damper response.
  • BD7 and BD5 Fitment: Specifically made to suit BD7 and BD5 shock assemblies for a direct replacement.
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 the BD-S4 fit other Yokomo shock bodies?

The BD-S4 is optimised for BD7 and BD5 dampers. It may fit other shock bodies physically, but it is engineered for those two chassis, so check dimensions before swapping.

How does the fluorine coating affect feel on track?

The fluorine layer reduces internal drag so pistons move more smoothly, which improves consistency and response through consecutive laps.

Any tips for maintaining these shock cylinders?

Inspect seals and pistons regularly, clean oil paths when servicing, and use compatible shock oil to keep damping consistent and minimise wear.

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