Super e has a 1-7/8" throat at the butterfly and a 1-9/16" venturi and is recommended for use on big twin or sportster engines up to 100-cubic-inch
Super g has a 2-1/16" throat at the butterfly and is recommended for use on 100-cubic-inch or larger big twin with performance modifications such as porting, cam change, big bore cylinders and/or stroker flywheels
If there is a doubt as to which carburetor to use, we suggest the 1-7/8" super e
Each carb kit includes an s&s super e/g gas carburetor
S&s super e carburetors require the use of a two-cable, pull open/pull close throttle assembly.