Hastings 2M6482020 Moly Ring Set (1200cc) - .020in. Oversize tires-wheels-spokes-rear-spoke-sets Allows the use of exhaust

Allows the use of exhaust systems with 18mm O2 sensor bungs to be used with late model bikes with 12mm O2 sensors

2007 Polaris X2 500 EFI

Exhaust Duration (Degrees at 1mm): 252

1989-1990 Yamaha YZ250WR

Silicone impregnated seals

Hastings 2M6482020 Moly Ring Set (1200cc) - .020in. Oversize tires-wheels-spokes-rear-spoke-sets Allows the use of exhaustNote: Has 1 16in. compression ring Available in standard and oversize versions. Feature a moly top ring. Reverse torsional taper face second ring and easy spiral on three piece oil rings. NOTE: Each PART # includes enough rings for two pistons except where noted. Vehicle Fitment: 1955 1957 Harley Davidson FL 1959 1964 Harley Davidson FL 1955 1964 Harley Davidson FLF 1965 1969 Harley Davidson FLFB Electra Glide 1958 1964 Harley Davidson FLH Duo Glide