RC Shock Oil Weight Converter

Equivalents

Cross-reference values are approximate — brand-to-brand viscosity varies a few percent even at the same labeled value. For race-pace tuning, dial in by feel from this starting point.

How to convert RC shock oil cSt to weight (wt)

There is no single number that works for every bottle. “wt” is not a standardized unit, so 30 wt from one brand is not the same thickness as 30 wt from another. Team Associated, Losi/TLR and XTR each label by weight on their own scale, while Mugen, Yokomo, Hudy and AKA skip wt entirely and print the true cSt on the bottle. Enter your value above to convert it on the common US scale, then check the brand-by-brand table below before you buy across brands.

Starting-point shock oil by class

Conservative pro-setup averages. Adjust for grip, track temp, and your driving style.

Full cross-reference chart

Tap a row to load it above.

How RC shock oil viscosity is labeled

• • Centistokes (cSt) is the actual viscosity unit used by oil manufacturers.
• • Weight (wt) is an older convention — most US brands (AE, Losi, Pro-Line, Trinity, MIP, JConcepts) approximate cSt × 0.1. So "30 wt" ≈ 300 cSt.
• • Mugen, Yokomo, Hudy, AKA label oil in cSt directly. Mugen 400 = 400 cSt.
• • Brand-to-brand viscosities at the same label vary a few percent — close enough to start, then dial in by feel.
• • Higher cSt = stiffer damping, slower shock movement. Lower cSt = faster, more compliant.

Now pick the oil

The charts list every brand’s oils side by side on one cSt scale, with part numbers.