Each carb kit includes an S&S Super E or Super G gas carburetor, S&S teardrop air cleaner assembly, manifold, (unless noted) mounting hardware, fuel line, clamps, overflow line, one extra intermediate jet and two main jets, VOES tubing (when applicable), installation and jetting instructionsSuper E has a 17/8" throat at the butterfly and a 19/16" venturi and is recommended for use on Big Twin or Sportster engines up to 100-cubic-inchSuper G has a 21/16" throat at the butterfly and a 13/4" venturi and is recommended for use on 90-cubic-inch and larger high-performance and modified engines21/16" G is not recommended for smaller, lower compression enginesIf there is a doubt as to which carburetor to use, we suggest the 17/8" Super ECarburetors only also availableNOTE: S&S Super E & G carburetors require the use of a two-cable, pull open/pull close throttle assembly.