{"product_id":"hastings-3-7-8-chr-moly-piston-ring-set-010","title":"Hastings, 3-7\/8\" chr\/moly piston ring set. +.010\"","description":"\u003cp\u003e\u003c\/p\u003e\u003ch2\u003eDescription\u003c\/h2\u003e\u003cp\u003eReplacement for 99-06 Twin Cam models that are equipped with the 95\" (1550cc) 3-7\/8\" OEM big bore kit. Also fits 07-17 Twin Cam 103\" (1690cc) engine. \u003cbr\u003e\u003cbr\u003eStd cyl. bore: 3.875\" (98.425mm). \u003cbr\u003e\u003cbr\u003e1st ring: 1.5mm. \u003cbr\u003e\u003cbr\u003e2nd ring: 1.5mm. \u003cbr\u003e\u003cbr\u003eoil ring: 2.5mm.  \u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eTech tip: Piston grooves vs piston rings. \u003cbr\u003e\u003cbr\u003eIt'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. \u003cbr\u003e\u003cbr\u003eTech tip: Piston oversizes. \u003cbr\u003e\u003cbr\u003eFor each oversize cylinder diameter will increase with .010\" (0.254mm). The standard bore of the cylinder is listed for reference. \u003cbr\u003e\u003cbr\u003e(Information provided by Hastings Manufacturing Company, Inc.)\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\u003ctr\u003e\n\u003cth\u003eUnit\u003c\/th\u003e\n\u003ctd\u003ePR\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/table\u003e\u003ch2\u003eFitment\u003c\/h2\u003e\u003cp\u003e99-06 (NU) Twin Cam A\/B with 1550CC (95\") Big Bore; 07-17 Twin Cam 103\" engine\u003c\/p\u003e\u003ch2\u003ePart numbers\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSupplier SKU\u003c\/th\u003e\n\u003ctd\u003e915352\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer part\u003c\/th\u003e\n\u003ctd\u003e2M4941010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Hastings","offers":[{"title":"Default Title","offer_id":58634374349144,"sku":"915352","price":67.64,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0975\/8235\/0680\/files\/908440k_89b2fc70-9994-4dc6-b183-34ca316955c5.jpg?v=1791034628","url":"https:\/\/deathproofcycles.com\/products\/hastings-3-7-8-chr-moly-piston-ring-set-010","provider":"Deathproof Cycles","version":"1.0","type":"link"}