Bell mouths or trumpets optimize and accelerate the air flow and improve the supply of fresh air to the carburetor. Fits 15 - 21mm PHBG carburetors. The bell mouth is threaded and is simply screwed onto the carburetor.

• Brand: Polini
• SKU: P203.1504
• Availability: In stock
• Thread M32x1,25Outside diameter 48mmLength 29mm

Notes and Safety Bell mouthIntake funnels or bell mouths are usually made of metal and are conically shaped to create a venturi effect. Bell mouths are mounted on the intake of the carburetor and serve the following purposes:Racing bellmouthIn racing, carb bell mouths are used without air filters to let in as much fresh air as possible and reintroduce it into the engine. The responsiveness of the engine is also increased by the Venturi effect. However, the absence of the air filter exposes the engine to dirt and foreign bodies. In addition, it is usually necessary to install a large carburetor jet.Bell mouth with grillIntake cones with grille are used as an alternative to the original air fi