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172cc 61mm SSP-G BIG BORE KIT (OD 62.8) (54mm SPACING) NO BORING ON MOST MODELS
SSP-G 172cc 61mm BIG BORE KIT (OD 62.8). HIGH PERFORMANCE FOR GY6 MOTORS. CYLINDER HEAD WITH VALVES INSTALLED (FITS:54mm). (CAST PISTON MAY OR MAY NOT HAVE NCY STAMP).
8mm STUDS, GASKETS, AND BOLTS. HEAD GASKET, AND 2 BASE GASKETS.
FOR STOCK GY6 BLOCK WITH 54mm SPACING ONLY. OUTER CYLINDER DIAMETER 62.8mm MOST KITS ARE 65mm.THIS PART SHOULD BE INSTALLED BY A PROFESSIONAL MECHANIC.