Excellent condition smooth, looks very clean. Using digital calipers, the Bore reads 61mm
According to seller, He had an F6 125 had been upped to the 175cc displacement. This can be done possible because the bottom end is the same for both the F6 125cc and F7 175cc bikes.
He wanted to get it back to original 125cc state, so he changed these parts out.
Exhaust port is missing one of the small mounting stud.
Sale includes the four large mounting studs and the exhaust connecter, all are pictured
I have the matching cylinder head available sku 4399,