it's for shure a Biral kit, main cylinder is cast iron with envelope aluminum, it rather light and lighter than an 94mm original cyl/piston, and it is clear that it is not recent, except that nothing does not make it possible to identify it. I will make photographs and drop them on the site.
Even on the seals, nothing appears, nothing on the piston axis.. or what ever..
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ride a type4.. it will change your life.....
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