Bel-Ray Thumper Racing Synthetic Ester Blend 4T Engine Oil
- Specifically engineered for 4-stroke single cylinder, multi-valve racing engines
- Combines the finest quality synthetic esters and highly-refined mineral base oils
- Provides maximum anti-wear protection for valve-trains, rings, cylinders and pistons
- Delivers maximum horsepower
- Provides consistent clutch performance
- Meets or exceeds API SM and JASO MA2 requirements
- Also suitable for air-cooled/liquid-cooled 4-stroke engines and wet clutches
Product Note:
| Specification | Details |
|---|---|
| Country of Origin | USA |
| Size | Varies (make selection above) |
| Viscosity Grade | Varies (make selection above) |
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