These cast aluminum manifolds are originally designed for use with S&S Super E and G carburetors but can also be used with our fmc-232403 billet manifold adapter to fit any spigot type carburetor, such as Mikuni HSR42, QwikSilver etc. Fits Twin Cam 1999-2017. Note: These manifolds must be installed with special S&S manifold to cylinder head seals, which must be ordered separately.
