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#P7641
Malossi 136cc MKIV cylinder kit for Vespa Smallframe 90-125cc & PK80-125cc. Also for 50cc engines with 51mm crankshafts fitted.
The MKIV version of the cast-iron Malossi kit. The cylinder head has been reworked, a new generation piston with extra large port windows and a long thread spark plug. This cylinder can be used with a direct cylinder intake or with the original crankcase intake. Carburettor jetting and ignition timing may need to be adjusted.
Specs:
Stroke: 51mm
Bore: 57.5mm
Malossi 3117681
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