Malossi MHR - Primary gearing - HTQ Z 15 / 38 – Vespa LX / Sprint / ET2 – Piaggio Fly / Liberty / Zip – 2-stroke – 6713339

If you have installed a larger Malossi cylinder on your two-stroke Vespa or Piaggio scooter, we recommend replacing both the primary and secondary gears with the variants developed by Malossi with higher ratios. This increases the top speed and means you do not have to keep the engine running at maximum revs, helping it last longer.

If you still have the original cylinder, this part is pointless because the engine will not produce enough power. You must replace both at the same time; replacing only the primary or only the secondary gears will not work.

Of course, these parts are only for use on the track; unfortunately, you are not allowed to ride with them on public roads.