Kawasaki 4-Stroke Full Synthetic Motorcycle Oil 10W40 1 Quart Official Kawasaki Product. Part Number: K61021-207A Model Fit: All Kawasaki 4-Stroke Motorcycles Meets or exceeds requirements for SAE 10W-40 API SL & CF, JASO MA and JASO MA2 engine oil Extra protection & performance in demanding conditions including high RPM, high temperatures and severe cold