V-Twin 31-9978 Auxiliary Seat Spring Kit for Plunger-Mounted Buddy Seats

Auxiliary zinc seat spring kit with chrome springs brackets nut set and buddy seat spring bar.

Improve the load-carrying capability of your motorcycle’s plunger-mounted buddy seat with the V-Twin 31-9978 Auxiliary Seat Spring Kit. This kit is designed to adapt to all plunger-mounted buddy seats, adding support for extra weight capacity while maintaining a practical, factory-style installation. It is a useful upgrade for riders who need additional seat support for touring, passenger use, or everyday riding.
The V-Twin auxiliary seat spring kit is built for compatibility with select Harley-Davidson FL models from 1965 through 1974. Its application-specific design makes it a suitable choice for restoration projects, replacement installations, and custom motorcycle upgrades. Verify your motorcycle’s existing seat and plunger mounting configuration before installation to ensure proper
Fitment
Harley Davidson FL 1965
Harley Davidson FL 1966
Harley Davidson FL 1967
Harley Davidson FL 1968
Harley Davidson FL 1969
Harley Davidson FL 1970
Harley Davidson FL 1971
Harley Davidson FL 1972
Harley Davidson FL 1973
Harley Davidson FL 1974
Harley Davidson FL 1975
Harley Davidson FL 1976
Harley Davidson FL 1977
Harley Davidson FL 1978
Harley Davidson FL 1979
Harley Davidson FL 1980
Harley Davidson FL 1981
Harley Davidson FL 1982
Harley Davidson FL 1983
Harley Davidson FL 1984