The Yokomo RP-113300 RP Ultra Shock Oil #30 (Green) is a silicone damper fluid created for accurate shock tuning in R/C vehicles. The RP Ultra series features improved gradation between viscosities plus color-coded bottles to speed selection during build and setup. This product is supplied as a 40cc bottle and is compatible with standard R/C shock absorbers that accept silicone oil.
Functionally, the oil alters internal shock flow to vary damping rates, so even modest viscosity adjustments can change handling. For best results when servicing, remove the old oil, fill with the RP Ultra fluid, purge air from the shock assemblies, and verify piston travel is consistent before finishing. The green color identifies the 30wt option within the RP Ultra range for easy bench selection.
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