1. ole1616

    Exhaust and modifications ideas!

    Hello everyone! So i have a beta ark scooter air coled minarelli block. The setup is: Dr evo 70 cc cylinder Motoofrce racing crank 17.5 dellorto-80 main jet Polini hi speed variator Top performance clutch and bell Stock exhaust without restrict It runs okay but desperate for a better exhaust...
  2. S

    Crank bearings

    What bearings should i buy for a pretty powerful mid-race moped? Hebo manston, yasuni c21..... I saw some Stage6 skf, Polini skf are they any different or just basic skf bearings?