This RP-085425A shock oil is formulated for RC-scale use to help tune damper response across varied surface conditions. The #42.5 grade offers a mid-range damping characteristic intended to aid traction on both high- and low-grip layouts while helping stabilise vehicles during jump landings when running off-road segments.
Use this oil when you need predictable damper feedback for setup work; it acts as a tuning variable alongside spring rate and shock piston choice. Follow your damper manufacturer’s fill and bleed procedures to avoid air pockets, and match oil grade to the suspension behaviour you want to achieve rather than changing ride height or springs first.
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