{"product_id":"8gl-12121-10-00-exhaust-valve-for-yamaha-yxz-r-ss-1000-2017-2025","title":"8GL-12121-10-00 Exhaust Valve for Yamaha YXZ-R SS 1000 2017-2025","description":"\u003ch2\u003eExhaust Valve for Yamaha\u003c\/h2\u003e\u003cp\u003eThis exhaust valve, part number 8GL-12121-10-00, controls exhaust gas flow out of the combustion chamber in Yamaha YXZ-R SS 1000 machines from 2017 through 2025.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe exhaust valve for Yamaha YXZ-R SS 1000 is a direct-fit replacement component that seals and releases combustion gases at the correct point in the engine cycle. Built to the 8GL-12121-10-00 specification, this exhaust valve restores proper compression and exhaust timing in the YXZ-R SS 1000 engine. It suits riders and mechanics performing top-end service or a full engine rebuild.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-ground valve face for a consistent seal against the valve seat\u003c\/li\u003e\n\u003cli\u003eHeat-resistant alloy construction suited to sustained exhaust temperatures\u003c\/li\u003e\n\u003cli\u003eStem diameter machined to OEM specification for correct guide fit\u003c\/li\u003e\n\u003cli\u003eHardened tip to resist wear from rocker or bucket contact\u003c\/li\u003e\n\u003cli\u003eDirect replacement for the 8GL-12121-10-00 exhaust valve\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Yamaha YXZ-R SS 1000, 2017-2025\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTop-end rebuilds after valve burn or compression loss\u003c\/li\u003e\n\u003cli\u003eScheduled engine refresh on high-hour YXZ-R SS 1000 units\u003c\/li\u003e\n\u003cli\u003eCylinder head service and valve seat grinding jobs\u003c\/li\u003e\n\u003cli\u003eRestoring exhaust flow and engine sealing after a failure\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\u003e8GL-12121-10-00\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\u003eMachine Fitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003efor Yamaha YXZ-R SS 1000, 2017-2025\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 Should exhaust valves be replaced as a set? \u003cstrong\u003eA:\u003c\/strong\u003e Replacing all exhaust valves together with new seals and lapping each to its seat is standard practice during a head rebuild. Mixing worn and new valves can lead to uneven sealing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this valve require lapping before installation? \u003cstrong\u003eA:\u003c\/strong\u003e Many builders lap a new exhaust valve to verify seat contact and check valve margin. Confirm clearance and seat condition before final assembly.\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":51065678463062,"sku":"OO1C08354","price":49.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_5ca41f16-ad6c-4219-9d15-b38dc10d9aa5.jpg?v=1794394707","url":"https:\/\/www.solidspare.com\/products\/8gl-12121-10-00-exhaust-valve-for-yamaha-yxz-r-ss-1000-2017-2025","provider":"Solid Spare","version":"1.0","type":"link"}