Motorex Power Synthetic 4T Oil - 5W40 - 4L. 404-400 Fully synthetic, high-performance 4-stroke engine oil for motorcycles Provides optimum protection against engine wear under the most grueling, extreme temperature racing conditions Power Synt 4T 10w50 Oil has been selected by KTM to be used in all of their 4-stroke motorcycles, worldwide No slipping of the wet clutch Extreme temperature and shear protection