{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"ddf41b39de9b","name":"KIT EX VALVE+SPRING KX450F, PROX 28.SES4406-1 EXHAUST","sku":"65-K111.PX","brand":"Pro-X Racing","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":156.04,"formatted":"£156.04"},"summary":"Prox Steel Exhaust Valve and Spring Kit. This kit contains a set of steel exhaust valves and special designed stronger valve springs. The ProX steel valves offer 3 times the lifespan of OEM titanium valves. The kit replaces OEM valves and valve springs and can be installed using OEM retainers, bases, and valve seats. Part number PROX 28.SES4406-1. Manufacturer: Pro-X Racing. Weight: 172 grams.","attributes":[{"label":"General Product Group","value":"Cam & Valvetrain"},{"label":"General Product Type","value":"Valve & Spring Kit"},{"label":"Variant Id","value":"264458"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/65-K111_2EPX/77e0a3eb30cd45f8.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/65-K111_2EPX/77e0a3eb30cd45f8.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/65-K111_2EPX/517869c20e2013f4.jpg"],"description":"Prox Steel Exhaust Valve and Spring Kit. This kit contains a set of steel exhaust valves and special designed stronger valve springs. The ProX steel valves offer 3 times the lifespan of OEM titanium valves. The kit replaces OEM valves and valve springs and can be installed using OEM retainers, bases, and valve seats. Part number PROX 28.SES4406-1. Manufacturer: Pro-X Racing. Weight: 172 grams.","descriptionMarkdown":"### ProX Steel Exhaust Valve and Spring Kit\n\nUpgrade your motorcycle's exhaust system with this high-quality Steel Exhaust Valve and Spring Kit from ProX. Engineered for durability and performance, this kit offers a significant increase in lifespan compared to OEM titanium valves. ProX steel valves are designed to last up to 3 times longer than standard titanium valves.\n\nThis comprehensive kit includes a set of specially designed stronger valve springs. Because steel valves are heavier than titanium, these enhanced springs are crucial for optimal function and performance. The ProX kit seamlessly replaces your original exhaust valves and springs. You can utilize your existing OEM retainers, bases, and valve seats for a straightforward installation.\n\n#### Key Features:\n\n \n- Extended Lifespan: Steel valves provide up to 3 times the lifespan of OEM titanium valves.\n \n- Enhanced Durability: Robust steel construction for long-lasting performance.\n \n- Complete Kit: Includes steel exhaust valves and stronger, specifically designed valve springs.\n \n- OEM Compatibility: Designed to replace stock valves and springs, utilizing OEM retainers, bases, and valve seats.\n \n- Optimized Performance: Stronger springs compensate for the increased weight of steel valves, ensuring proper operation.","weightGrams":null,"fitments":[{"make":"KAWASAKI","model":"KFX 450","cc":null,"notes":null,"years":"2008–2014"},{"make":"KAWASAKI","model":"KFX R 450","cc":null,"notes":null,"years":"2008–2014"},{"make":"KAWASAKI","model":"KX 450F","cc":null,"notes":null,"years":"2006–2008"}],"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-kx450f-prox-28ses4406-1-exhaust","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/ddf41b39de9b:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/ddf41b39de9b: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."]}}