POLINI For Race 4 Full Exhaust System

The new Polini FOR RACE 4 exhaust systems have been completely revisited to be in step with the times. The project is specific for the latest scooters generation. The expansion deign, even more aggressive, has been completely changed and its more similar to the Big Evolution mufflers. In this way it has been possible to use the telemetry and the data taken during the Polini Italian Cup races to develop and improve the engine performance both when accelerating and power outputting.

The expansion chamber has 7 sectors of different sizes that have been welded among them by hand (1 more compared to the previous model).
The new line make the fitting of the Polini Torsen WD easier.
The Black silencer, made of light alloy, silk-screen printed, has an inside core with direct exhaust and it can be disassembled to replace the deadening material.