Primary transmission Piaggio Zip SP 2T 15/38 Polini

Ideal for gaining maximum speed with a good setup, here is the primary transmission POLINI.
Often, with a prepared setup, you reach the maximum speed limit of your bike, the solution is to install a longer transmission.
Thanks to this transmission, your speed will be higher at the same engine speed! Generally, you gain 10 to 20 km/h at engine speeds of 11,000 to 13,500 RPM! Don't forget to order the accompanying transmission oil so you can change it!

Attention!! For highly tuned engines, check the gear ratio installed on your bike.