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 1 7/8" (47.6mm) throat at the butterfly and a 1 9/16" (39.6mm) venturi and is recommended for use on Big Twin or Sportster engines up to 100-cubic-inchSuper G has a 2 1/16" (52.3mm) throat at the butterfly and a 1 3/4" (44.5mm) venturi and is recommended for use on 90-cubic-inch and larger high-performance and modified engines2 1/16" G is not recommended for smaller, lower compression enginesIf there is a doubt as to which carburetor to use, we suggest the 1 7/8" Super ECarburetors only also availableNOTE: S&S Super E & G carburetors require the use of a two-cable, pull open/pull close throttle assemblyIMPORTANT NOTE: Recommended for racing only, this carburetor is not legal for use in California on motor vehicles operated on public highways or in other states where similar pollution laws may apply. User must determine the suitability of the product for his or her use and assumes all risk and liability in connection therewith.