{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"e34a8f1e570c","name":"VALVE EXHAUST YZF250 01-13, 5NL-12121-10-00, 80-80077","sku":"65-422.KW.SS","brand":"Kibblewhite","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":4,"price":{"amount":40.3,"formatted":"£40.30"},"summary":"Exhaust valve manufactured from one-piece forged Black Diamond stainless steel with a proprietary nitriding process for increased wear resistance and reduced friction. Designed using Finite Element Analysis and flow bench tested. Compatible with Kibblewhite lightweight valve spring kits. Specifications: Valve Type: Exhaust, Material: Black Diamond Stainless, Coating: Black Nitroneg, Quantity: 1, Head Diameter: 24.50 mm / 0.965\", Stem Diameter: 4.5 mm / 0.1758\", Tulip: 25 degrees, Overall Length: 3.070\". Cross-Reference OEM Part Numbers: Kibblewhite 80-80077, Yamaha 5NL-12121-10-00.","attributes":[{"label":"General Product Group","value":"Cam & Valvetrain"},{"label":"General Product Type","value":"Valve - Exhaust"},{"label":"Variant Id","value":"263757"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/65-422_2EKW_2ESS/d43c98934c1758f9.png","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/65-422_2EKW_2ESS/d43c98934c1758f9.png"],"description":"Exhaust valve manufactured from one-piece forged Black Diamond stainless steel with a proprietary nitriding process for increased wear resistance and reduced friction. Designed using Finite Element Analysis and flow bench tested. Compatible with Kibblewhite lightweight valve spring kits. Specifications: Valve Type: Exhaust, Material: Black Diamond Stainless, Coating: Black Nitroneg, Quantity: 1, Head Diameter: 24.50 mm / 0.965\", Stem Diameter: 4.5 mm / 0.1758\", Tulip: 25 degrees, Overall Length: 3.070\". Cross-Reference OEM Part Numbers: Kibblewhite 80-80077, Yamaha 5NL-12121-10-00.","descriptionMarkdown":"### Kibblewhite Black Diamond Exhaust Valve for Yamaha WR/YZ 250F\n\nUpgrade your Yamaha WR250F or YZ250F engine with this high-performance Black Diamond&trade; exhaust valve. Engineered as a direct OEM replacement, this valve is constructed from a single piece of forged Black Diamond&trade; stainless steel and subjected to a proprietary nitriding process. This advanced treatment significantly enhances wear resistance, reduces friction, and provides exceptional durability, even under demanding operating conditions.\n\nDesigned using sophisticated Finite Element Analysis and validated through flow bench testing, this exhaust valve ensures optimal engine performance and longevity. For the best results and extended service life, KPMI recommends pairing this valve with Kibblewhite&reg; lightweight valve spring kits.\n\n#### Key Features:\n\n\t\n- Crafted from one-piece forged Black Diamond&trade; stainless steel for superior strength.\n\t\n- Features a Black Nitroneg surface treatment for increased wear resistance and reduced friction.\n\t\n- Engineered using Finite Element Analysis and flow bench tested for peak performance.\n\t\n- Designed for compatibility with Kibblewhite&reg; lightweight valve spring kits.\n\n#### Specifications:\n\n\t\n- Valve Type: Exhaust\n\t\n- Material: Black Diamond&trade; Stainless Steel\n\t\n- Coating: Black Nitroneg\n\t\n- Quantity: 1\n\t\n- Head Diameter: 24.50 mm / 0.965 inches\n\t\n- Stem Diameter: 4.5 mm / 0.1758 inches\n\t\n- Tulip Angle: 25 degrees\n\t\n- Overall Length: 3.070 inches\n\t\n- Remarks: Standard\n\n#### Cross-Reference Part Numbers:\n\n\t\n- Kibblewhite: 80-80077\n\t\n- Yamaha: 5NL-12121-10-00\n\t\n- PSYCHIC: XU-09519E\n\t\n- Vertex: 8400005-1\n\t\n- Wiseco: VET005","weightGrams":null,"fitments":[{"make":"GAS-GAS","model":"EC F 250","cc":null,"notes":null,"years":"2010–2015"},{"make":"GAS-GAS","model":"EC F 300","cc":null,"notes":null,"years":"2013–2015"},{"make":"YAMAHA","model":"WR 250F","cc":null,"notes":null,"years":"2001–2013"},{"make":"YAMAHA","model":"YZ 250F","cc":null,"notes":null,"years":"2001–2013"}],"collections":[{"name":"Cam & Valvetrain","url":"https://www.2brosparts.com/api/agent/collection/GB/cam-valvetrain"},{"name":"Valve - Exhaust","url":"https://www.2brosparts.com/api/agent/collection/GB/valve-exhaust"}],"links":{"page":"https://www.2brosparts.com/products/valve-exhaust-yzf250-01-13-5nl-12121-10-00-80-80077","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/e34a8f1e570c:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/e34a8f1e570c:1"}},"market":{"country":"GB","countryName":"United Kingdom","locale":"en-gb","currency":"GBP","exchangeRateFromGbp":1,"pricesIncludeUkVat":true,"checkoutTax":null,"delivery":[{"name":"Standard","description":"Orders £15.00–£59.99 · 2–4 business days","carrier":null,"estimatedDays":"2–4 business days","price":{"amount":4.99,"formatted":"£4.99"},"free":false,"minimumOrder":{"amount":0,"formatted":"£0.00","gbp":0},"weightGrams":null},{"name":"Standard","description":"Orders £60.00 and up · 2–4 business days","carrier":null,"estimatedDays":"2–4 business days","price":{"amount":0,"formatted":"£0.00"},"free":true,"minimumOrder":{"amount":60,"formatted":"£60.00","gbp":60},"weightGrams":null}],"storeUrl":"https://www.2brosparts.com"},"navigate":{"start":"https://www.2brosparts.com/api/agent","search":"https://www.2brosparts.com/api/agent/search/GB/{words+joined+with+plus}"},"howToBuy":{"summary":"Build a basket for the shopper and give them one checkout link. Every URL is a plain path (no query string) and a GET. Nothing is stored between calls.","checkoutLinkFormat":"https://www.2brosparts.com/api/agent/checkout/GB/{basketKey}:{quantity},{basketKey}:{quantity}","steps":["1. Find products: follow links in these responses, or fetch https://www.2brosparts.com/api/agent/search/GB/{words+joined+with+plus} (e.g. https://www.2brosparts.com/api/agent/search/GB/brake+pads). Every product has a basketKey.","2. Optional check: https://www.2brosparts.com/api/agent/basket/GB/{basketKey}:{quantity},{basketKey}:{quantity} returns stock, totals per delivery option and the checkout link.","3. Give the shopper the checkout link. Opening it fills their basket with exactly these items (replacing what was there) and opens checkout for United Kingdom. They pay on 2brosparts.com through Stripe."],"noFetchNeeded":"You can write the checkout link yourself from basketKeys and quantities; nothing has to be fetched first. Each product also has links.buyOneNow, a ready link for one unit.","stateless":"Nothing is saved on our side. The items part of the URL is the whole basket: to change it, write the link again with the new list.","itemsFormat":"basketKey:quantity pairs joined by commas, e.g. 04f24aad4d68:2,7c1e9a0b3f2d:1. Quantity defaults to 1. Up to 50 products, 100 each.","country":"GB is the shopper's delivery country. Swap it for theirs (US, DE, FR…) in any URL; currency, tax and delivery follow it.","tips":["Put everything the shopper wants in one link.","Optionally add your name as a last path segment on checkout links (…/checkout/GB/<items>/claude) so the sale is credited to you.","The checkout link is for the shopper's browser. Do not open it yourself.","Signed-in trade account holders see their trade prices at checkout."]}}