Polini Evo 2 Exhaust 50-70cc Yamaha BW'S / Stunt / Slider / Minarelli Vertical

Successor to the Polini Evolution I. If you want up to 21 horsepower from your 70cc Evo cylinder, you will get about that with this exhaust.

Extremely lightweight construction, resonance length and volume have been designed for the Evolution series.

One of the features is the good performance, both at low and high RPM. Maximum power is developed between 11,500 and 12,500 rpm, the working range of the Midrace cylinders.

ATTENTION! The EVOLUTION exhaust systems can only be mounted if the stand HAS BEEN REMOVED.