Which belt used with a 72cc motor?

[vermi]

I need to change my belt on my Kymco People 50S, the scooter have a 72cc kit and a polini variator.

I don't know if i need to use a Kevlar belt or not.
For now i have a POLINI belt, before i have a ATHENA and when i buy the scooter i have the original Kymco belt but when i install the 72cc motor, the belt broke after 500km!

Wich belt is better to use with a 72cc kit!?

Thank's!

[blue]

stick with the bando belts..........same size as the stock one.

[Vivo]

stick with the bando belts..........same size as the stock one.

Yes Bando....

I won't use kevlar... you may not destroy it, but it may destroy other things in your CVT...