Kibblewhite 20-2028 Engine Exhaust / Intake Valve Kit

We choose to use C630 nickel bronze as a material to make valve guides because of its ideal characteristics for the application. The 4-5 percent nickel content provides superior resistance to wear, and the approximately 80 percent copper content delivers outstanding heat conductivity. Guide profiles are designed to have minimal effect on the airstream while maintaining critical cross sectional thickness in high temperature areas, promoting high performance and endurance. Guides will require machining for seal installation. Guide O.D. - .5730". Guide I.D. Internal - .3745". Guide I.D. External - .3735"This item fits the following models: 1948-1950 Harley Davidson E1948-1952 Harley Davidson EL1948-1950 Harley Davidson F1948-1964 Harley Davidson FL1953-1964 Harley Davidson FLF1965-1969 Harley Davidson FLFB1955-1964 Harley Davidson FLH Electra Glide1970-1977 Harley Davidson FLH Electra Glide1965-1969 Harley Davidson FLHB1955-1964 Harley Davidson FLHF1970-1972 Harley Davidson FLHF1965-1969 Harley Davidson FLHFB1971-1977 Harley Davidson FX Super Glide1974-1977 Harley Davidson FXE Super Glide1977 Harley Davidson FXS Low Rider