Complete line POLINI For Race 4

The Polini FOR RACE 4 exhaust pumps were all revised to be always at the cutting edge. The project is specific for last generation scooter engines. The line of the expansion room, always more captivating, has changed completely by resembling much of Big Evolution pots. In this way it has been possible to work using the telemetry and data on the tracks of the Polini Italian Cup to develop and improve the performance of the engine either in relation to acceleration or power refoulement. The expansion chamber consists of 7 different areas of measurement welded between them entirely by hand (1 sectors more than the previous model). The new line also allows easy installation of the Polini TorsenWD switch. The Black silencer, made of light alloy, laser-graphed to a direct exhaust inner soul and can be dismantled to change the absorbent phono material.