. 85mm Standard Bore Piston made from the Strongest Materials to keep it in your Vehicle Longer.Piston Kit Fits Honda 98061-59616 90601-KA5-000 Quality and Performance Guaranteed OEM Compatibility: 1996 Fits Honda XR400R. Includes Piston 85mm Std, Piston Rings, Piston Pin, Circlips, Head Gasket, Base Gasket.