With the "Corsa" offers a revised version of the Polini 70cc sport cylinder. Tighter timing , polished outlet and increased compaction provide up to 2-3 hp more power than the standard 70cc cylinder . The flask is fitted with a chromium- and a cast piston ring. To use the full power can , should the cylinder with a sport - or even better racing exhaust such as Stage6 or Polini ForRace be used . It should also have at least a 17.5 - carburetor he be moved because the original carburetor internal cooling system can not be guaranteed . Comparison numbers: Neu & Originalverpackt.
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