I've been trying to chose which one should I buy but I don't know! So my choices are Polini Sport 70cc or Malossi Sport 70cc and I don't really know which one is better. So does somebody have any experience of those two cylinders? And I've read that malossi sport is faster but polini has better acceleration. And I also want some speed, it should go atleast 90km/h.

if you want to stunt go with the better acceleration...don't worry, it's minor difference between those 2, so you won't make a bad choice

buy DR 70 ;) polini and malossi are overpriced.. its the same power and acceleration.. with perfect setup for the dr ;) try with giannelli shot (top nardo) and u will have very good power in the low rpms.. 19mm dellorto hebo or stage6 clutch and power1 vario ;) this is the best setup for less money.. ;) if u want more power buy DR 70 rpm tuned power like polini corsa.. for 120-130euro only ;) new