Performance Parts

Screamin' Demons are the latest development in the evolving family of Demon performance carburetors. Screamin' Demons were designed with the weekend racer in mind. They are available in 650-850 cfm mechanical secondary models, as well as a 750 cfm vacuum...

Single 50cc accelerator pump diaphragm

Screamin' Demons are the latest development in the evolving family of Demon performance carburetors. Screamin' Demons were designed with the weekend racer in mind. They are available in 650-850 cfm mechanical secondary models, as well as a 750 cfm vacuum...

Screamin' Demons are the latest development in the evolving family of Demon performance carburetors. Screamin' Demons were designed with the weekend racer in mind. They are available in 650-850 cfm mechanical secondary models, as well as a 750 cfm vacuum...

Accelerator pump cup for use with Street Demon® Carburetors

Fuel inlet filter screen for Street Demon® carburetors

Custom tailor accelerator pump timing to your specific engine needs. Includes 8 cams for modular four barrels and two barrels with 2 screws.

Calibrate the accelerator pump discharge volume to your particular application by changing the pump nozzle. Use of the hollow screw allows increased fuel flow ensuring the nozzle is the controlling factor in fuel delivery. Choose either the tube type or s

Anti-pullover nozzles are used to combat a condition that is sometimes called "pump pull-over". As a stream of air rushes past the discharge nozzle it has a tendency to pull fuel from the nozzle, especially on smaller cubic inch engines. Sold per pair.

Calibrate the accelerator pump discharge volume to your particular application by changing the pump nozzle. Use of the hollow screw allows increased fuel flow ensuring the nozzle is the controlling factor in fuel delivery. Choose either the tube type or s

Complete assortment of 7 different diaphragm springs for vacuum secondary carburetors. The stiffness of the spring determines when the secondaries open.

Calibrate the accelerator pump discharge volume to your particular application by changing the pump nozzle. Use of the hollow screw allows increased fuel flow ensuring the nozzle is the controlling factor in fuel delivery. Choose either the tube type or s