The S&S Super E carburetors are specifically designed for Harley-Davidson Big Twin and Sportster engines. They feature adjustable accelerator pump for instant throttle response at any rpm. The ejector nozzle is located in line between the main discharge tube and the butterfly for undisturbed air flow. With the rider in mind the idle mixture screw has been angled for greater accessibility even with 5 gal. gas tanks. The enrichment device also was refined with a large variable position lever which is easy to operate even with thick gloves. The throttle spool assembly is designed for later style two cable pull open - pull closed throttle. Cables and air cleaner assembly are not included and must be purchased separately. S&S Super E are approximately 40 mm shorter than Super B carbs and provide easy clearance for Fat Bob tank applications and good rider comfort.