{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"9407dd4db705","name":"KIT EX VALVE+SPRING RM-Z450, PROX 28.SES3407-1 EXHAUST","sku":"65-K108.PX","brand":"Pro-X Racing","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":140.5,"formatted":"£140.50"},"summary":"Prox Steel Exhaust Valve/Spring Kit. This kit contains steel exhaust valves and specially designed stronger valve springs. The steel valves have an extended lifespan compared to OEM titanium valves. The kit replaces OEM valves and springs and can be installed using OEM retainers, bases, and valve seats. Part number 28.SES3407-1. Manufacturer: Pro-X Racing. Weight: 122g.","attributes":[{"label":"General Product Group","value":"Cam & Valvetrain"},{"label":"General Product Type","value":"Valve & Spring Kit"},{"label":"Variant Id","value":"264455"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/65-K108_2EPX/7162c70b6d2a265a.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/65-K108_2EPX/7162c70b6d2a265a.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/65-K108_2EPX/de42463c73b3e079.jpg"],"description":"Prox Steel Exhaust Valve/Spring Kit. This kit contains steel exhaust valves and specially designed stronger valve springs. The steel valves have an extended lifespan compared to OEM titanium valves. The kit replaces OEM valves and springs and can be installed using OEM retainers, bases, and valve seats. Part number 28.SES3407-1. Manufacturer: Pro-X Racing. Weight: 122g.","descriptionMarkdown":"### ProX Steel Exhaust Valve and Spring Kit\n\nUpgrade your engine's performance and durability with the ProX Steel Exhaust Valve and Spring Kit. This kit is engineered as a steel conversion for your original titanium valves, offering significantly extended lifespan—up to three times longer than OEM titanium valves. \n\nEach kit includes a high-quality steel exhaust valve and specially designed, stronger valve springs. The increased weight of the steel valve necessitates a heavier spring for optimal performance and reliability. This ProX kit is designed for a direct replacement of your OEM valves and springs, utilizing your existing retainers, bases, and valve seats for a straightforward installation.\n\n- Durable steel construction for extended valve life\n\n- Replaces OEM titanium valves with a more robust steel alternative\n\n- Includes exhaust valve and stronger, specially designed valve springs\n\n- Utilizes OEM retainers, bases, and valve seats for easy installation\n\n- Manufactured by Pro-X Racing","weightGrams":null,"fitments":[{"make":"SUZUKI","model":"RM-Z 450","cc":null,"notes":null,"years":"2007"}],"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-rm-z450-prox-28ses3407-1-exhaust","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/9407dd4db705:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/9407dd4db705:1"}},"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."]}}