Mounts with the original cylinder head.
Here is the cheapest kit market out of CGN. This kit type original good quality with a good finish, Ø40mm bore that will allow you to start fresh without increasing the performance of your scooter.
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Comes complete as presented with its piston and its segments, its axis of Ø12mm (that is what differentiates it from other kits for GY6 50cc 4T) , its piston clips, cylinder head gasket, base and chain tensioner. Mounts on scooter 50cc 4 stroke 2 valves like PEUGEOT DJANGO, SYM FIDDLE 2, ...
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Mounts on GY6 4T piston engine 12mm:
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 4T