RP Ultra Silicone Shock Oil 42.5 (Blue) — Yokomo RP-113425 40cc  [RP-113425]

Yokomo RP-113425 RP Ultra Shock Oil #42.5 (Blue)
Price:
£6.19
Brand:
Yokomo
Model:
RP-113425
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Key Details: RP Ultra Shock Oil

The Yokomo RP-113425 RP Ultra Shock Oil #42.5 is a silicone shock fluid formulated for radio control dampers. It is supplied in a 40cc bottle and is blue for quick identification when sorting viscosities.

Role in setup: This oil changes the flow characteristics inside the shock to influence both rebound and compression, letting you refine handling without mechanical changes.

Installation and handling: Service shocks by removing old fluid, refilling with the selected viscosity, and compressing to purge air before resealing. Keep the bottle capped and avoid introducing dust or oil contaminants to preserve consistent damping properties.

Tuning notes: The #42.5 grade provides a middle-ground damping feel. Alter one variable at a time and compare neighbouring viscosities, as spring rates, piston holes, and track conditions all affect the final behaviour.
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 are the bottle size and visual ID for this oil?

The product comes in a 40cc bottle and the #42.5 oil is coloured blue so you can quickly pick the correct grade when setting up shocks.

How should I approach tuning with 42.5 viscosity?

Start with 42.5 as a baseline for balanced damping. Evaluate handling, then try slightly thicker or thinner oils while noting ride changes to isolate the most effective adjustment.

Are there disposal or storage considerations?

Store in a sealed container away from heat and contaminants. Dispose of used oil following local regulations for chemical waste and avoid pouring into drains.

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