{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"013c04823a8e","name":"SPRING, RETAINERS, SHIMS KIT, KIBBLEWHITE 80-80066 RACING, WRF250 01-12, YZF250 01-12","sku":"65-721.FK","brand":"Kibblewhite","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":6,"price":{"amount":208.76,"formatted":"£208.76"},"summary":"Kibblewhite 80-80066 Racing Spring Retainers and Shims Kit. Features lightweight racing valve chrome silicon springs, titanium retainers, and H.T. steel lower collars. Designed for 0.380 inch valve lift. Intake and exhaust specifications include 40# seat pressure and 86 lb. at .380 lift. This kit is part of a comprehensive system designed using proprietary software and over 70 years of experience, ensuring compatibility with cam profiles, valvetrain mass, engine RPM, and system harmonics. Components are manufactured by U.S. based, ISO-certified partners using Super-Clean Chrome Silicon valve spring wire. Manufacturing processes include heat treatment, stress relief, and shot peening.","attributes":[{"label":"General Product Group","value":"Cam & Valvetrain"},{"label":"General Product Type","value":"Valve Spring"},{"label":"Variant Id","value":"264346"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/65-721_2EFK/46e253799b31eaf6.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/65-721_2EFK/46e253799b31eaf6.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/65-721_2EFK/ff90fb9465839d39.jpg"],"description":"Kibblewhite 80-80066 Racing Spring Retainers and Shims Kit. Features lightweight racing valve chrome silicon springs, titanium retainers, and H.T. steel lower collars. Designed for 0.380 inch valve lift. Intake and exhaust specifications include 40# seat pressure and 86 lb. at .380 lift. This kit is part of a comprehensive system designed using proprietary software and over 70 years of experience, ensuring compatibility with cam profiles, valvetrain mass, engine RPM, and system harmonics. Components are manufactured by U.S. based, ISO-certified partners using Super-Clean Chrome Silicon valve spring wire. Manufacturing processes include heat treatment, stress relief, and shot peening.","descriptionMarkdown":"### Kibblewhite Racing Valve Spring Kit\n\nThis high-performance valve spring kit is engineered by Kibblewhite for racing applications, offering enhanced valve control and reliability for your off-road motorcycle. Designed with a focus on precision and durability, this kit ensures optimal performance in demanding conditions.\n\nThe Kibblewhite Racing Valve Spring Kit features:\n\n \n- Lightweight Racing Valve Springs: Constructed from Super-Clean Chrome Silicon wire for reduced valvetrain mass and improved response.\n \n- Titanium Retainers: Significantly lighter than steel retainers, further reducing valvetrain inertia.\n \n- High-Tensile Steel Lower Collars: Provides a strong and stable base for the valve spring assembly.\n \n- Included Seals: Ensures proper sealing for optimal engine performance.\n \n- High Lift Capability: Engineered for up to 0.380 inches of valve lift.\n \n- Specific Pressures: Offers 40 lbs of seat pressure and 86 lbs of pressure at 0.380 inches of lift for both intake and exhaust valves.\n\nKPMI (Kibblewhite Precision Machining Inc.) employs a scientific systems approach to valve spring kit design. Each component is meticulously engineered to work harmoniously within the complete valvetrain system. Utilizing proprietary design and simulation software, combined with over 70 years of design experience, KPMI ensures that the valve spring's force, natural frequency, and cam profile are precisely matched. This integration considers valvetrain mass, system harmonics, and engine RPM to deliver peak performance and reliability.\n\nThe valve spring manufacturing partners are ISO certified U.S. based companies. The premium quality Super-Clean Chrome Silicon valve spring wire used is traceable to its origin in Kobe, Japan, renowned for producing some of the world's finest spring wire. Through rigorous design, simulation, heat treatment, stress relief, and shot peening processes, Kibblewhite delivers world-class valve springs designed for the most demanding racing environments.","weightGrams":null,"fitments":[{"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 Spring","url":"https://www.2brosparts.com/api/agent/collection/GB/valve-spring"}],"links":{"page":"https://www.2brosparts.com/products/spring-retainers-shims-kit-kibblewhite-80-80066-racing-wrf250-01-12-yzf250-01-12","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/013c04823a8e:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/013c04823a8e: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."]}}