Here is the cylinder - piston without cylinder head in large diameter 42mm under the brand AIRSAL (renowned Spanish brand) for scooter SYM MIO and ORBIT 50cc 4 times ...
 

 
Of good quality, it allows above all to refurbish your cylinder at a low price but it also offers an increase in compression and displacement, therefore power! Its finish and materials are good. Supplied with seals, clips, 10mm axle, piston, segments ... Made in Spain!
 

 
Mounts on : 
SYM Mio 50 
SYM Fiddle II 50 
SYM Orbit II 50 
SYM Jet4 
SYM Allo 50 
SYM Cello 50 
SYM Symphony 50 
Peugeot Vivacity 4T 
Peugeot Speedfight 3 4T 
Peugeot Kisbee 4-stroke