Hi Community 
I want to give the old lady a new heart and are looking at the Grand Sport Piston.
Question?
How to i messure what size i need (stock piaggio barrel) ?.
Any other things i should change while i got her opened up ?
The speedo says 23012km (14299miles) and the previous owner said he has never changed a thing inside the engine!
Please advise me
Best Regards
Kasper Winding
Denmark