We had to source the head gasket for 400cc which is discontinued; Kalina Industries from Zlín helped a great deal and manufactured an affordable replica from their portfolio. A broad variety of manufacturing machines and a great customer experience. Highly recommended.
Wössner piston set with gudgeon pin and piston rings seats ok with
an adequate clearance
OEM cylinder gasket and Oring
Installation with lubricated barrel and rings pressed inwards went rather smoothly
