Secondary transmission Minarelli horizontal long crankcase 15/42 Polini

Gear ratios extend the final drive of the motorcycle.
If the engine has enough power and can handle a longer gear 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, please contact us.

NOTE! For lightly tuned engines we recommend the 13/44 transmission (extends by 15.50%), for highly tuned engines you can use the 14/42 setup (extends by 25.00%).

The 16/40 transmission (extends by 60.00%) can only be used on fully tuned engines! If you are not sure which is the ideal transmission for your setup, please contact us.