{"product_id":"hastings-3-7-16-bore-chr-moly-piston-ring-set-070-908475","title":"Hastings, 3-7\/16\" Bore Chr\/moly Piston Ring Set. +.070\"","description":"\u003cp\u003eStd cyl. bore: 3.4375\" (87.312mm). 1st ring: 1.6mm. 2nd ring: 1.6mm. oil ring: 4.75mm. 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. (Tech tip information provided by Hastings Manufacturing Company; Inc.)\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e 41-E78 1200cc\/74\" Big Twin (Excl. Flatheads) (NU)\u003c\/p\u003e\u003cp\u003eSuitable where the listed fitment matches.\u003c\/p\u003e","brand":"Hastings","offers":[{"title":"Default Title","offer_id":57518370783607,"sku":"908475","price":39.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0647\/4619\/3127\/files\/908440k.jpg?v=1791378822","url":"https:\/\/www.pedrosparts.co.uk\/products\/hastings-3-7-16-bore-chr-moly-piston-ring-set-070-908475","provider":"Pedro's Parts","version":"1.0","type":"link"}