{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"56919af053de","name":"YAMAHA YZF 450 2014 - 2019 WRF 450 2016 - 2020 STEEL EXHAUST VALVE  CONVERSION KIT","sku":"PROX.28-SES2444-1","brand":"Prox","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":4,"price":{"amount":202.42,"formatted":"£202.42"},"summary":"Steel exhaust valve conversion kit manufactured of premium grade steel to exact OEM specifications and tolerances. Made by leading OEM factories in Japan, these steel valves are a direct and cost-efficient OEM replacement.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/yamaha-yzf-450-2014-2019-wrf-450-2016-2020-steel-exhaust-valve-conversion-kit-11230-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/yamaha-yzf-450-2014-2019-wrf-450-2016-2020-steel-exhaust-valve-conversion-kit-11230-p.jpg"],"description":"Steel exhaust valve conversion kit manufactured of premium grade steel to exact OEM specifications and tolerances. Made by leading OEM factories in Japan, these steel valves are a direct and cost-efficient OEM replacement.","descriptionMarkdown":"### ProX Steel Exhaust Valve Conversion Kit\n\nThe ProX Steel Exhaust Valve Conversion Kit provides a reliable and cost-effective alternative to standard valvetrain components. Designed to meet or exceed OEM specifications, these valves are manufactured in leading Japanese facilities to ensure precision tolerances and long-term engine performance.\n\nSwitching to a steel valve setup is a popular choice for riders looking for increased durability and longevity in their engine. These valves are built from premium grade steel, offering exceptional strength and resistance to the high temperatures generated during operation.\n\n### Key Features\n\n \n- Premium Steel Construction: Manufactured from high-quality steel to provide superior durability compared to stock components.\n \n- OEM Specifications: Engineered to exact OEM tolerances for a precise fit and reliable operation.\n \n- Cost-Efficient Upgrade: Provides a more affordable maintenance solution without compromising on quality or performance.\n \n- Japanese Engineering: Produced by industry-leading OEM factories in Japan to ensure consistent quality standards.\n \n- Enhanced Reliability: Designed to withstand the rigorous demands of high-performance off-road and track riding.\n\nThis conversion kit is an ideal choice for engine rebuilds where reliability is the primary goal. By utilizing high-grade materials and advanced manufacturing processes, ProX ensures that your engine valvetrain remains stable and efficient throughout the service life of the component.","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/yamaha-yzf-450-2014-2019-wrf-450-2016-2020-steel-exhaust-valve-conversion-kit","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/56919af053de:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/56919af053de: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."]}}