{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"ce16ab3a7bb5","name":"KIT EX VALVE+SPRING YZF250, PROX 28.SES2414-1 WRF250 15-17, EXHAUST","sku":"65-K101.PX","brand":"Pro-X Racing","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":143.87,"formatted":"£143.87"},"summary":"ProX Steel Exhaust Valve/Spring Kit. This kit contains steel exhaust valves and specially designed stronger valve springs. The steel valve offers a lifespan up to 3 times longer than OEM titanium valves. The kit replaces OEM valves and springs and can be installed using OEM retainers, bases, and valve seats. Part number 28.SES2414-1. Manufactured by Pro-X Racing. Weight 98g.","attributes":[{"label":"General Product Group","value":"Cam & Valvetrain"},{"label":"General Product Type","value":"Valve & Spring Kit"},{"label":"Variant Id","value":"264448"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/65-K101_2EPX/b24831dfe843a0c5.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/65-K101_2EPX/b24831dfe843a0c5.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/65-K101_2EPX/9c8d01e0bde85b68.jpg"],"description":"ProX Steel Exhaust Valve/Spring Kit. This kit contains steel exhaust valves and specially designed stronger valve springs. The steel valve offers a lifespan up to 3 times longer than OEM titanium valves. The kit replaces OEM valves and springs and can be installed using OEM retainers, bases, and valve seats. Part number 28.SES2414-1. Manufactured by Pro-X Racing. Weight 98g.","descriptionMarkdown":"### ProX Steel Exhaust Valve and Spring Kit\n\nUpgrade your motorcycle's performance and durability with the ProX Steel Exhaust Valve and Spring Kit. This comprehensive kit is designed to replace your OEM titanium exhaust valves and springs, offering a significant increase in lifespan. ProX utilizes high-quality steel for its valves, which are engineered to last up to three times longer than standard titanium valves.\n\nEach kit includes a set of specially designed, stronger valve springs. These are crucial to accommodate the slightly increased weight of the steel valves, ensuring optimal performance and reliability. The ProX kit is designed for a straightforward installation, allowing you to use your existing OEM retainers, bases, and valve seats.\n\n**Key Features:**\n\n \n- Extends valve lifespan up to 3 times compared to OEM titanium valves.\n \n- Constructed with durable steel for enhanced longevity.\n \n- Includes stronger, specially designed valve springs to match the steel valves.\n \n- Direct replacement for OEM exhaust valves and springs.\n \n- Compatible with OEM retainers, bases, and valve seats for easy installation.\n \n- Improves overall engine reliability and performance.","weightGrams":null,"fitments":[{"make":"YAMAHA","model":"WR 250F","cc":null,"notes":null,"years":"2015–2018"},{"make":"YAMAHA","model":"YZ 250F","cc":null,"notes":null,"years":"2014–2018"},{"make":"YAMAHA","model":"YZ 250FX","cc":null,"notes":null,"years":"2015–2018"}],"collections":[{"name":"Cam & Valvetrain","url":"https://www.2brosparts.com/api/agent/collection/GB/cam-valvetrain"},{"name":"Valve & Spring Kit","url":"https://www.2brosparts.com/api/agent/collection/GB/valve-spring-kit"}],"links":{"page":"https://www.2brosparts.com/products/kit-ex-valvespring-yzf250-prox-28ses2414-1-wrf250-15-17-exhaust","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/ce16ab3a7bb5:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/ce16ab3a7bb5:1"}},"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."]}}