## Bel-Ray Thumper Racing Ester Blend Semi-Synthetic 4T 15W50 4L Engine Oil Bel-Ray Thumper Racing Ester Blend 4T is a high-quality semi-synthetic engine oil that combines synthetic esters with mineral base oils. Designed specifically for single-cylinder, four-stroke, and multi-valve racing engines, it provides maximum protection against wear and tear on valves, rings, cylinders, and pistons. ### Performance and Specifications Bel-Ray Thumper Racing Ester Blend 4T oil significantly exceeds API SN and JASO MA2 standards. This oil is suitable for both air-cooled and liquid-cooled four-stroke engines. Meeting the stringent JASO MA2 standards, it guarantees smooth operation of wet clutches, transferring high torque without the risk of slippage. It's the ideal solution for high-performance motorcycles. ### Application Bel-Ray Thumper Racing Ester Blend 4T is recommended for all scooters and four-stroke motorcycles whose oils meet API SG/SH/SJ/SL/SM/SN standards. It performs excellently in all four-stroke engines with wet or conventional clutches. ### Benefits * **Minimal wear:** Bel-Ray Thumper Racing Ester Blend 4T oil reduces wear on cylinders and rings, and extends bearing life. * **Sludge control:** Effectively cleans sludge and varnish deposits, keeping engine surfaces and cavities clean. * **Stable viscosity:** Maintains optimal viscosity across a wide temperature range (from -20°C to 50°C), providing excellent lubrication, minimizing friction, and maximizing performance. * **Smooth power transmission:** Prevents clutch seizure and facilitates its operation, resulting in a smooth and dynamic ride. ### Packaging The oil is supplied in a 4-liter (4000 ml) container. ### Bel-Ray Brand Bel-Ray is a brand known for its high-quality products that meet the expectations of the most demanding motorcyclists. Thumper Racing Ester Blend 4T is further proof of Bel-Ray's commitment to delivering innovative solutions that guarantee optimal engine performance and longevity.