Novarossi OVAL Carb Venturi reducer 7.85mm with O ring

Novarossi OVAL Carb Venturi reducer 7.85mm with O ring

Novarossi OVAL Carb Venturi Reducer.

Featuring a unique oval shape,  Novarossi carb restrictors provide improved fuel mileage, with a more progressive power delivery that is smooth on the bottom, and ramps up as RPM's increase.

The restrictors are available in 7.25 mm through 8.00 mm diameters, so you can tune the power delivery of your engine for any track condition.


The carburetor restrictor (or venturi) is used to adjust the flow of air into the engine.

By changing the size of the venturi, you can fine tune the power delivery and run time of the engine.

A larger venturi will increase top end power and is better suited to larger tracks, but will reduce run time.

A smaller venturi will improve bottom end throttle response, more suited for smaller tracks, and will help to improve run time compared to a larger venturi.