Bel-Ray Thumper Racing 10W-40 Synthetic Ester Blend 4T Engine Oil 1L

Maximum performance for 4-stroke motorcycles, motocross, enduro bikes, and ATVs.

Bel-Ray Thumper Racing 10W-40 is a high-quality, synthetic ester blend multi-grade oil developed to meet the demanding needs of modern 4-stroke racing engines.

Whether it’s motocross, enduro, or street use, this oil provides exceptional protection and power in situations where the engine is pushed to its limits.

This oil is more than just a lubricant; it is a technical component that combines the benefits of synthetic esters with the reliability of mineral oil. It is designed to keep the engine clean, cool, and efficient from the first start to the checkered flag.

Why choose Bel-Ray Thumper Racing?

• Ester Technology: Synthetic esters cling to metal surfaces, forming a protective film that acts like a magnet. This reduces wear during critical phases, such as cold starts.
• Optimized Clutch Performance: The specialized formula ensures a smooth and precise clutch feel. It prevents clutch slippage and guarantees maximum power transfer to the rear wheel.
• Excellent Thermal Stability: Maintains stable viscosity even at high temperatures, protecting the engine from seizure and premature wear in the toughest riding conditions.
• Clean Engine: Powerful additives prevent the formation of carbon and sludge, keeping piston rings free and valves clean.

Technical Specifications

• Viscosity: 10W-40
• Type: Synthetic Ester Blend (Semi-synthetic)
• Application: 4-stroke racing and hobby motorcycles
• Classifications: API SN, JASO MA2
• Pack size: 1 liter / 4 liters

Compatibility

Bel-Ray Thumper Racing is perfect for all air- and liquid-cooled 4-stroke engines requiring 10W-40 viscosity. It is an excellent choice for brands such as KTM, Honda, Yamaha, Kawasaki, Suzuki, and Husqvarna.

Pro-tip

The JASO MA2 rating means the oil is tested to perform perfectly with wet clutches.