Ester Tech 4+ 10W-50 is a fully synthetic, superior performance 4-stroke competition engine oil. High-grade base oils combined with the revolutionary Ester Tech additive system guarantee outstanding performance in the following areas, among others: - A very powerful lubricanting film, even under the most extreme operating conditions - Maximum engine performance - A very high and extremely stable viscosity index - Optimal functioning of the wet clutch - Accurate and smooth gear-changing - Superior protection against wear - Minimum oil consumption as a result of low volatility Ester Tech 4+ 10W-50 has been exclusively developed for modern, high-tech, high to very high performance race and road motorcycles.