Pro Honda HP4S 4-stroke motorcycle oil offers ultimate performance and protection. Delivers the ultimate in performance, protection and durability for you high-performance machine. The comprise free on quality is the Honda tradition. Hi-Performance full synthetic oil is engineered specially for severe duty and racing applications. This exclusive formula gives maximum engine wear protection during the critical cold start period, and during high rpm use. Shear-stable polymer additive for smoother, more positive shifting. Reduced friction for maximum power, better fuel economy, cooler running and minimal engine wear. Lower volatility for reduced oil consumption. Dyno tested to provide maximum horsepower. Better low temperature fluidity for easier cold weather starting. Superior corrosion resistance than conventional motor oils.