Super E Shorty Carb Carburetor S&type fit Harley Big Twin Sportster 11-0421

Super E Shorty Carb Carburetor for S&S Harley Big Twin Sportster 11-0420 New. 1978 Harley Electra Glide Anniverary FLH, 1996,1997,2003 Harley Road King Anniversary EFI FLHRI. 2003 Harley Electra Glide Anniversary EFI FLHTI, 2003,2005 Harley Fatboy Anniversary EFI FLSTFI. How Does A Motorcycle Carburetor Work? Motorbike carburetors, unlike those in cars, are controlled by the throttle position.

Where a car's carburetor will adjust based on engine speed a motorcycle carburetor dependent on a number of different systems to shape air flow into the engine. The system that performs at the highest throttle speeds is called the main jet. It is essentially an open passage that draws air very quickly in with little bottle-necking.

Inserted in the main jet is a jet needle. As the throttle is brought higher and higher, the jet needle is slowly removed, opening up more and more of the air passage into the carburetor.

The passage is entirely open at full throttle, becoming the main jet. The pilot jet and the slide valve are two separate systems that regulate the airflow through much smaller holes when the motorbike is traveling at lower speeds, typically from idle to quarter throttle. Hardness, firm, reliable, and durable. Compatible with more than 200 kind motorcycle.

Wear, resistant and longer lifspan. Easy installation, no need complicated tools, convenient and dependable for using.