Whether Motul 5100 4T 10W-40 1L is good for your motorcycle depends on the specific make, model and year of your motorcycle. In general, it is a high-quality lubricant that is suitable for use in most 4-stroke motorcycle engines. It is fully synthetic, which means it provides superior performance and protection compared to traditional mineral-based oils. It has a 10W-40 viscosity grade, which means it is suitable for use in a wide range of temperatures, from hot to cold weather. It also meets or exceeds industry standards for motorcycle lubricants such as API SL and JASO MA2.