The new Evolution 2 kit is specific for racing on track for the Vespa Class 135cc category. The main feature of this new cylinder is the fitting that has been studied to work both in the original position and in the “turned” position often used during the races on track. This positon also favors the development and assembly of the muffler. The engine has more power at every rpm.
The Polini muffler for Vespa GTS125/GT200/GTS250/GTS and GTV300 4-stroke has a modern design: it has well-finishing touches and it’s very reliable thanks to its extraordinary mechanical resistance; it is lighter than the original muffler of 2,9 kg.
The asphalt temperature in the third race of Polini Italian Cup in Pomposa was high, even very high. Not only from a climate point of view, for a temperature higher than 30 ° and a sunny day without clouds: especially for burning contests in all various races of the day.
Exalting acceleration and never-ending engine progression with the new Polini maxi Hi Speed Variator studied for the Honda FORZA 125 and adaptable to the most famous HONDA SH 125-150 bikes too.
An engine which is even more advanced, modern, innovative and revolutionary. These are only some of the many features of the Polini Thor 80 2 stroke. A project born from the wish to design and manufacture an engine that, moreover its incredible features of power and compactness, it represents the last flagship of Polini Motori’s production.