Translation of description :
"Sequential electronic shifting for your scooter.
Makes it possible to shift gears with your scooter.
You can set the number of gears yourself with this system.
Advice is to choose a maximum of 3 gears with a scooter that is not tuned up.
It is different with heavily tuned scooters, here me you can go up to 5 switching options.
This system can be mounted on all Minarelli horizontal engines.
The set comes with installation manual.
Note: only for horizontal horizontal"
€ 36,12 =$42.41 .