Super E Partial Carburetor Kit for 1966-'84 Big Twin Models, 5 Gallon Tanks (no manifold and mounting hardware included)Fitment: 1966 '84 Big Twin Models 5 Gallon Tanks Features and benefits: Four fuel delivery ports Better throttle response O ring sealed idle mixture screw Increased air flow for more power Super E 1 7 8" (47. 6mm) bore for engines up to 100" displacement Adjustable enrichment starting system does not restrict air flow like a conventional choke Adjustable accelerator pump S&S chrome teardrop air cleaner Two cable throttles required see notes Kit