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Hi, I have an atypical moped sachs madass with 139fmb engine ordered a set of cylinder + head 72 4T 139FMB the order itself with shipment went very smoothly, cylinder ok unfortunately the head was no longer 100% as it should be, mainly it's about the finish sharp edges with numerous flecks after treatment, in addition the casting probably from beer cans as for me the head itself is not worth anything better to put money and buy something better quality
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I used these sealing rings on my jawa betka /kentoya twinshot on 139FMB engine and I can not complain about the engine does not leak any oil and the material is better than the original.
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perform their function well, they fit well together , and lie well in the pupil, do not slip during installation like some which is very annoying at times
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oil orings very good job they hold up great where they belong I would recommend to anyone about to do a major overhaul of the 139fmb engine
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Everything as positive as possible. Quality of materials as well as speed of shipping on the plus side. Certainly these are not my last purchases at Gmoto.pl
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Romet WS 50 vintage 2014 - the o-rings fit perfectly in their places. workmanship very good. when replacing the head we need 2 gaskets
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Everything as described .Delivery price and speed very satisfactory .Fits exactly to the model for which it is dedicated
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