High up on our list of recommendations is the Venturi Air Filter from Doppler. The air filter tapers down to the carburetor, accelerating the mix and so supporting the intake (you know, like when a garden hose is pressed together, the water sprays out with higher pressure). When installed in an original motor, leave a flow hole. When installing in a tuning object, you wil have to break open the area marked for doubled inflow. A clever flange system allows the Doppler Air Filter to fit on carburetors from 17.5 mm to 25 mm. An additional plus: they are an absolute optical highlight. The Doppler Air Filter is the quietest system on the market, making it a winner on all fronts.
Go to this product on www.sip-scootershop.com.
