{"product_id":"6s5-12121-00-00-exhaust-valve-for-yamaha-gp-r-ho-1800-2020-2023","title":"6S5-12121-00-00 Exhaust Valve for Yamaha GP-R HO 1800 2020-2023","description":"\u003ch2\u003eExhaust Valve for Yamaha\u003c\/h2\u003e\u003cp\u003eThis exhaust valve, reference 6S5-12121-00-00, controls exhaust flow on the Yamaha GP-R HO 1800 to keep engine breathing consistent across the rev range.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe exhaust valve is a direct-fit replacement component for the Yamaha GP-R HO 1800, cross-referenced under part 6S5-12121-00-00. It regulates exhaust gas exit timing so the engine holds steady power through acceleration and load. Built for riders servicing their own Yamaha watercraft or shops handling routine engine rebuilds.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eConstructed from heat-resistant alloy able to withstand continuous exhaust temperatures\u003c\/li\u003e\n\u003cli\u003ePrecision-machined seat and stem for a consistent seal against the valve guide\u003c\/li\u003e\n\u003cli\u003eCross-referenced to OEM part number 6S5-12121-00-00 for direct replacement\u003c\/li\u003e\n\u003cli\u003eDesigned to maintain exhaust timing under sustained high-RPM operation\u003c\/li\u003e\n\u003cli\u003eResists carbon buildup and thermal warping across repeated heat cycles\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Yamaha GP-R HO 1800, 2020-2023\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRoutine top-end servicing on Yamaha GP-R HO 1800 watercraft\u003c\/li\u003e\n\u003cli\u003eEngine rebuilds after valve wear or compression loss\u003c\/li\u003e\n\u003cli\u003eExhaust flow restoration when a valve sticks or burns\u003c\/li\u003e\n\u003cli\u003ePreventive replacement during seasonal maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6S5-12121-00-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eComponent Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExhaust Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003efor Yamaha GP-R HO 1800\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Years\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2020-2023\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 Does this valve fit other Yamaha models beyond the GP-R HO 1800? \u003cstrong\u003eA:\u003c\/strong\u003e Fitment is tied to the part number 6S5-12121-00-00, so match that reference on your machine before ordering. \u003cstrong\u003eA:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is any special tooling required for installation? \u003cstrong\u003eA:\u003c\/strong\u003e Standard valve spring compression tools used for Yamaha watercraft engine work are typically sufficient. \u003cstrong\u003eA:\u003c\/strong\u003e\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":51065543688278,"sku":"OO1C08116","price":50.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_87b8e774-ca13-4bf3-82df-906fec18474f.jpg?v=1794394574","url":"https:\/\/www.solidspare.com\/products\/6s5-12121-00-00-exhaust-valve-for-yamaha-gp-r-ho-1800-2020-2023","provider":"Solid Spare","version":"1.0","type":"link"}