{"product_id":"hastings-107-m8-chrome-piston-ring-set-005","title":"Hastings, 107\" M8 chrome piston ring set. +.005\"","description":"\u003cp\u003eStandard cylinder bore: 3.937\" (100mm) bore.  1st. ring: 1.2mm.  2nd ring: 1.2mm Oil ring: 2.0mm Stock replacement for 107\" models. Comes with a chrome top ring; a ductile iron Napier 2nd. ring and a chrome flex-vent 3-piece oil ring.   Tech tip: Piston grooves vs piston rings.  It''s not difficult to determine if a Hastings piston ring set will fit a certain piston. You should measure the height of the piston groove in the piston itself. The 2 top grooves will be for compression rings; the lower groove will be for the oil ring. In most cases Hastings oil rings are of the low tension 3-piece flex vent type. Ring heights are listed for reference.  Tech tip: Piston oversizes.  For each oversize cylinder diameter will increase with .010\" (0.254mm). The standard bore of the cylinder is listed for reference.  (Information provided by Hastings Manufacturing Company; Inc.)\u003c\/p\u003e","brand":"Hastings","offers":[{"title":"Default Title","offer_id":52773243158856,"sku":"938822","price":115.9,"currency_code":"EUR","in_stock":true}],"url":"https:\/\/holydeath.com\/fr\/products\/hastings-107-m8-chrome-piston-ring-set-005","provider":"Holy Death Motorcycle Co.","version":"1.0","type":"link"}