{"product_id":"namura-040-over-bore-piston-rings-for-yamaha-some-2016-2018-700-104mm-no-oem","title":"Namura .040 Over Bore Piston Rings for Yamaha Some 2016-2018 700 104mm NO OEM","description":"\u003ch2\u003eNamura .040 Over Bore Piston Rings for Yamaha\u003c\/h2\u003e\u003cp\u003eThese Namura .040 oversize piston rings are designed for Yamaha 700cc engines with a 104mm bore, providing a precise seal in overbored cylinders to restore compression and power. This aftermarket set does not carry an OEM part number.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe Namura .040 over bore piston rings for Yamaha deliver a reliable sealing solution for 700cc engines that have been bored oversize, helping to rebuild top‑end performance. These rings suit Yamaha models from 2016‑2018 that use a 104mm piston, making them a solid choice for engine rebuilders.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eManufactured from high‑strength ductile iron for durability\u003c\/li\u003e\n\u003cli\u003ePrecisely machined to .040 oversize for a tight fit in bored cylinders\u003c\/li\u003e\n\u003cli\u003eDesigned to handle high RPM loads without ring flutter\u003c\/li\u003e\n\u003cli\u003eCompatible with OEM ring grooves after proper piston selection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn‑The‑Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eEngine top‑end rebuilds and performance restoration\u003c\/li\u003e\n\u003cli\u003eMotocross, trail riding, and utility applications with bored cylinders\u003c\/li\u003e\n\u003cli\u003eReplacing worn rings to reduce oil consumption and improve compression\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e104mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOversize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.040\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNamura\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Do I need to hone the cylinder before installing new rings? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, a proper cylinder hone with the correct crosshatch pattern is essential for ring seating and long life.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Can these rings be used with a stock piston? \u003cstrong\u003eA:\u003c\/strong\u003e No, .040 oversize rings require a matching oversize piston; they are not compatible with standard pistons.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":44848135733334,"sku":"SZ1F06267","price":54.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_8a55d15f-a792-4b73-b317-30b21d258d50.jpg?v=1781060602","url":"https:\/\/www.solidspare.com\/products\/namura-040-over-bore-piston-rings-for-yamaha-some-2016-2018-700-104mm-no-oem","provider":"Solid Spare","version":"1.0","type":"link"}