GREY MINARELLI AND PIAGGIO ENGINE DIAM 28/35MM (ref: 468871)

The DOPPLER Air box air filter, that associates performance, filtering and low noise level, is a great technological advancement. Indeed, thanks to an extremely advanced development on test bench and road, DOPPPLER's results were higher than those of the market. This system reuses the forced air technique used in motorcycle through venturi tubes. This technique speeds up the gas and then improves the engine filling. Moreover, other stand out factors are taken into consideration such as noise and filtering. On one hand, the venturi tubes leening reduces the intake sound level. On the other hand, the efficient filtering element reduces dust penetration, limitates the engine wear in order to keep a stable performance through time. Inside the box, the filering elements are diagonally placed to provide bette air passage. This entirely dismountable product can be maintained. Finally, this box can be used on the original carburetor or with bigger carburetor diameters.