The main feature of the automatic clutches for scooter is definitely the maintenance of the friction coefficient, which allows a good feedback even in the most demanding situations.
The behaviour at high temperatures is an essential element in order to judge the quality of a clutch, and that is why Brenta automatic clutches have been subjected to the most severe track tests.
Even for automatic clutches we have studied a racing version thanks to lightened centrifuges use that increase performance in the toughest conditions.