{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"d20861d09f78","name":"KIT EX VALVE+SPRING RM-Z250 2007-2025, PROX 28.SES3338-1 EXHAUST","sku":"65-K105.PX","brand":"Pro-X Racing","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":152.27,"formatted":"£152.27"},"summary":"Prox steel exhaust valve and spring kit. This kit contains steel exhaust valves and specially designed stronger valve springs. The ProX kit replaces OEM valves and springs and can be installed using OEM retainers, bases, and valve seats. Manufacturer: Pro-X Racing. Weight: 118 grams.","attributes":[{"label":"General Product Group","value":"Cam & Valvetrain"},{"label":"General Product Type","value":"Valve & Spring Kit"},{"label":"Variant Id","value":"264452"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/65-K105_2EPX/cb7b4b2023435ee8.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/65-K105_2EPX/cb7b4b2023435ee8.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/65-K105_2EPX/a418808b6f5d3f65.jpg"],"description":"Prox steel exhaust valve and spring kit. This kit contains steel exhaust valves and specially designed stronger valve springs. The ProX kit replaces OEM valves and springs and can be installed using OEM retainers, bases, and valve seats. Manufacturer: Pro-X Racing. Weight: 118 grams.","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 comprehensive kit is designed to replace your original equipment titanium valves and springs, offering a significant increase in lifespan. ProX's innovative steel valves provide up to three times the durability of OEM titanium valves, ensuring longer service life and reduced maintenance.\n\nEach kit includes a set of high-quality steel exhaust valves and specially designed stronger valve springs. The enhanced spring strength is necessary to compensate for the added weight of the steel valves, ensuring optimal valve train operation. This kit is engineered for a direct fit, utilizing your motorcycle's original retainers, bases, and valve seats for a straightforward installation.\n\n#### Key Features:\n\n \n- Durable steel exhaust valves designed to outlast OEM titanium valves.\n \n- Increased lifespan of up to three times compared to stock titanium valves.\n \n- Includes stronger, specifically designed valve springs to accommodate steel valve weight.\n \n- Utilizes OEM retainers, bases, and valve seats for easy installation.\n \n- Provides a robust and reliable upgrade for your engine's exhaust system.","weightGrams":null,"fitments":[{"make":"SUZUKI","model":"RM-Z 250","cc":null,"notes":null,"years":"2007–2025"}],"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-z250-2007-2025-prox-28ses3338-1-exhaust","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/d20861d09f78:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/d20861d09f78:1"}},"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."]}}