{"product_id":"valve-exhaust-yzf250-01-13-5nl-12121-10-00-80-80078","title":"Valve Exhaust YZF250 01-13, 5NL-12121-10-00, 80-80077","description":"\u003cp\u003eThis exhaust valve is designed as a direct OEM replacement for Yamaha WR and YZ 250F models from 2001 to 2013. Constructed from Black Diamond™ stainless steel and treated with a proprietary nitriding process, it delivers increased wear resistance, reduced friction, and superior durability under high-performance conditions. KPMI recommends pairing this valve with Kibblewhite® lightweight valve spring kits for optimal performance and longevity.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eManufactured from one-piece forged Black Diamond™ stainless steel\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eNitrided surface treatment for improved wear resistance and reduced friction\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eDesigned using Finite Element Analysis and flow bench tested for optimal performance\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eCompatible with Kibblewhite® lightweight valve spring kits\u003c\/p\u003e \u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eValve Type: Exhaust\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eMaterial: Black Diamond™ Stainless\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eCoating: Black Nitroneg\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eQuantity: 1\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eHead Diameter: 24.50 mm \/ 0.965\"\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eStem Diameter: 4.5 mm \/ 0.1758\"\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eTulip: 25º\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eOverall Length: 3.070\"\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eRemarks: Standard\u003c\/p\u003e \u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eCross-Reference OEM Part Numbers\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eKibblewhite 80-80077\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003ePSYCHIC XU-09519E\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eVertex 8400005-1\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eWiseco VET005\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eYamaha 5NL-12121-10-00\u003c\/p\u003e \u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eVehicle Fitments\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eYamaha WR250F (2001–2013)\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eYamaha YZ250F (2001–2013)\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e2003 WR250F - WR250FR VALVE\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e2003 YZ250F - YZ250FR VALVE\u003c\/p\u003e \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- venture-connect-compatibility:start --\u003e\n\u003csection class=\"venture-connect-compatibility\"\u003e\u003ch3\u003eVehicle Compatibility\u003c\/h3\u003e\n\u003cp\u003ePlease check the exact model and year before ordering.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eYAMAHA\u003c\/td\u003e\n\u003ctd\u003eWR F 250\u003c\/td\u003e\n\u003ctd\u003e2001-2013\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYAMAHA\u003c\/td\u003e\n\u003ctd\u003eYZ F 250\u003c\/td\u003e\n\u003ctd\u003e2001-2013\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003c\/section\u003e\n\u003c!-- venture-connect-compatibility:end --\u003e","brand":"Kibblewhite","offers":[{"title":"Default Title","offer_id":57506905424252,"sku":"65-422.KW.SS","price":42.53,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/3952\/8167\/files\/65-422-kw-ss.png?v=1790496437","url":"https:\/\/radhouse.co.uk\/products\/valve-exhaust-yzf250-01-13-5nl-12121-10-00-80-80078","provider":"Radhouse","version":"1.0","type":"link"}