... have got ISO9001-2000 for our products. model:IE42bore:42mmmotorcycle engine/parts/cylinder blockWe have got ISO9001-2000 for our products ... hatch pattern?good oil-retaining characteristic?resulting great increase in engine life.4.Precise machining size?good shape and location allowance ... need matched with cylinder of piston ,piston ring, piston pin,gasket,clips,clon, and so on,that is no problem,we ...