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puch 80cc metrakit, including cylinder, head, gaskets, piston, piston rings, wrist pin and clipos
these kits, unlike others, require engine case modification to even fit into the case. don't fool yourself and think anything is going to fit on easy. not for rookies, mostly for gurus.
you'll have to use a pipe like the homoet 8p designed for angled exhaust ports (or hack and reweld), a different intake to get the carb away from the stifling frame, a huge carb, etc. etc.
this piston uses rings of the dykes ring (L ring) variety. iron bore sleeve, with oversize pistons available should you encounter any hmm, in this case, non fatal seizures. yep.
*photo is of the large port*
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crazy fast 
