Secondary transmission Aprilia SR / Gilera Runner 125/150/180cc 2-Stroke 14/43 Malossi

Transmission ratios extend the final ratio of the motorcycle.
If the engine has enough power and can handle a longer transmission ratio, the top speed increases.
The original cylinder in most cases does not have enough power, so it will need to be replaced with a more powerful one.

If you are not sure which is the ideal transmission for your setup, contact us.