Honda CB350 CL350 SL350 Piston Rings - (.50mm Oversize)This is a set of 2 complete . 50mm Oversize piston rings sets! So enough for 1 complete engine. This is a new in the package Piston Ring set (1 set for each piston) for the 1969 1970 1971 1972 1973 Honda CB350 CL350 Scrambler, and SL350 Hondas. These were the great twin cylinder, four stroke Honda. This is a . 50mm (64. 50mm) oversize piston ring set correct replacement for Honda #13031 287 010. This has the 2 compression rings and the lower oil

Please note this seal kit uses the sprocket shaft seal that is size  20x52x9 : Inner dimension 20mm

As well as the petcock bowl gasket which is the largest "O" ring in the photo

Laguna Seca is a paved road-racing track used for both motorcycle and auto racing

1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 Yamaha XT350

so if your bike is a 1978 please take a look that the head gasket looks the same

As you can see in the photos there is many more gaskets also included

74mm bore size

riding or racing your now vintage Kawasaki KZ400 Motorcycles

1963 Monterey Grand Prix from 1963

This is a standard size (STD) ring set that fit a stock standard size Honda piston ring

This has the 2 compression rings and the lower 3 pc oil control ring for both pistons

riding or racing one of these now vintage bikes