{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"1d82d67217b3","name":"KIT IN VALVE+SPRING KXF450, PROX 28.SIS4409-2 INTAKE","sku":"65-K171.PX","brand":"Pro-X Racing","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":156.04,"formatted":"£156.04"},"summary":"ProX Steel INTAKE Valve/Spring Kit contains steel intake valves and specially designed stronger valve springs. This kit replaces OEM valves and springs and can be installed using OEM retainers, bases, and valve seats. The ProX titanium into steel extends lifespan compared to OEM titanium valves. SKU 65-K171.PX. Manufacturer Pro-X Racing. Part number 28.SIS4409-2. Weight 178 grams.","attributes":[{"label":"General Product Group","value":"Cam & Valvetrain"},{"label":"General Product Type","value":"Valve & Spring Kit"},{"label":"Variant Id","value":"264487"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/65-K171_2EPX/873de01189229ff7.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/65-K171_2EPX/873de01189229ff7.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/65-K171_2EPX/77e7318a96a1338b.jpg"],"description":"ProX Steel INTAKE Valve/Spring Kit contains steel intake valves and specially designed stronger valve springs. This kit replaces OEM valves and springs and can be installed using OEM retainers, bases, and valve seats. The ProX titanium into steel extends lifespan compared to OEM titanium valves. SKU 65-K171.PX. Manufacturer Pro-X Racing. Part number 28.SIS4409-2. Weight 178 grams.","descriptionMarkdown":"### ProX Steel Intake Valve and Spring Kit\n\nEnhance the durability and lifespan of your engine with the ProX Steel Intake Valve and Spring Kit. This kit is designed to replace OEM titanium valves with high-strength steel valves, offering up to three times the longevity of standard titanium components.\n\nEach kit includes:\n\n \n- High-performance steel intake valves\n \n- Specially designed, stronger valve springs to accommodate the increased weight of steel valves\n\nThe ProX Steel Intake Valve and Spring Kit is engineered for direct installation, utilizing your original retainers, bases, and valve seats. This conversion offers a robust and cost-effective upgrade for your engine's valvetrain.\n\n**Key Features:**\n\n \n- Durable steel construction for extended lifespan\n \n- Includes stronger valve springs for optimal performance\n \n- Direct replacement for OEM valves and springs\n \n- Utilizes original engine components for installation","weightGrams":null,"fitments":[{"make":"KAWASAKI","model":"KX 450F","cc":null,"notes":null,"years":"2009–2018"}],"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-in-valvespring-kxf450-prox-28sis4409-2-intake","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/1d82d67217b3:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/1d82d67217b3:1"}},"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."]}}