The 0W40 viscosity is used by KTM in Factory RC8 superbikes
Delivers top horsepower performance for sportbikes and also 4-stroke motocross engines
The 15W50 is used by the Triumph BE1 Team for Supersport World Championships, G-LAB Triumph for IDM Supersport, and Factory KTM Racing in Europe and United States in the factory SX-F engines
The 0W40 is recommended for sportbikes and Japanese motocrossers while the 15W50 is recommended for KTM SX-F's and Triumph race bikes.