RC Shock Oil Weight Converter
Convert between weight (wt), centistokes (cSt), and brand numbering for Mugen, Yokomo, Hudy, and others.
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Equivalents
Centistokes (cSt)
350
Weight (wt)
AE / Losi / Pro-Line / Trinity / MIP / JConcepts
35 wt
Mugen
350
Yokomo / Hudy / AKA
350
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.
Starting-point shock oil by class
Conservative pro-setup averages. Adjust for grip, track temp, and your driving style.
| Class | Front | Rear |
|---|---|---|
| 1/10 2WD modified buggy | 30–40 wt (300–400 cSt) | 30–40 wt (300–400 cSt) |
| 1/10 4WD modified buggy | 35–45 wt (350–450 cSt) | 30–40 wt (300–400 cSt) |
| 1/10 SCT (stadium truck) | 35–45 wt (350–450 cSt) | 30–40 wt (300–400 cSt) |
| 1/8 nitro/e-buggy | 40–50 wt (400–500 cSt) | 35–45 wt (350–450 cSt) |
| 1/8 truggy | 45–55 wt (450–550 cSt) | 40–50 wt (400–500 cSt) |
| 1/10 on-road touring | 30–45 wt (300–450 cSt) | 30–45 wt (300–450 cSt) |
| 1/10 oval / drag | 20–30 wt (200–300 cSt) | 20–30 wt (200–300 cSt) |
Full cross-reference chart
Tap a row to load it above.
| cSt | Weight (wt) | Mugen / Yokomo / Hudy |
|---|---|---|
| 150 | 15 wt | 150 |
| 200 | 20 wt | 200 |
| 250 | 25 wt | 250 |
| 300 | 30 wt | 300 |
| 350 | 35 wt | 350 |
| 400 | 40 wt | 400 |
| 450 | 45 wt | 450 |
| 500 | 50 wt | 500 |
| 550 | 55 wt | 550 |
| 600 | 60 wt | 600 |
| 650 | 65 wt | 650 |
| 700 | 70 wt | 700 |
| 750 | 75 wt | 750 |
| 800 | 80 wt | 800 |
| 900 | 90 wt | 900 |
| 1000 | 100 wt | 1000 |
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.
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