{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"58324a01a6d3","name":"CST 4.00/4.50-18 TR4 TUBE","sku":"18T400CS 2860609","brand":"Cheng Shin","mpn":null,"gtin":null,"condition":"new","inStock":false,"stock":0,"price":{"amount":14.68,"formatted":"£14.68"},"promoCodesAllowed":false,"summary":"CST 4.00/4.50-18 TR4 TUBE","attributes":[{"label":"Vehicle Type","value":"Tubes / Flaps"},{"label":"Vehicle Subtype","value":"Motocycle Tubes"},{"label":"GRP","value":"B6"}],"image":null,"images":[],"description":"CST 4.00/4.50-18 TR4 TUBE","descriptionMarkdown":"### CST 4.00/4.50-18 TR4 Motorcycle Inner Tube\n\nThe CST 4.00/4.50-18 TR4 inner tube is a high-quality, durable replacement component designed for motorcycles requiring an 18-inch fitment. Engineered by Cheng Shin, this tube provides reliable performance and consistent air retention for off-road, dual-sport, and classic motorcycle applications.\n\nConstructed from premium-grade rubber compounds, this tube is built to withstand the rigours of various riding conditions. Its design ensures a precise fit within your tyre, reducing the risk of pinch flats and maintaining optimal tyre pressure during operation.\n\n**Key Features:**\n\n \n- Versatile Sizing: Designed to fit 4.00 and 4.50 widths on 18-inch rims.\n \n- TR4 Valve Stem: Features the standard TR4 valve stem configuration for ease of inflation and compatibility with most motorcycle rims.\n \n- Durable Construction: Manufactured by Cheng Shin to ensure long-lasting durability and resistance to wear.\n \n- Reliable Performance: Excellent airtight integrity for improved safety and handling.\n \n- Ideal Replacement: Perfect for routine maintenance or as a reliable spare for long-distance riding.\n\nEnsure your motorcycle maintains optimal performance and safety by choosing the reliable CST 18-inch inner tube for your next tyre change.","weightGrams":null,"fitments":[],"collections":[{"name":"Tubes / Flaps","url":"https://www.2brosparts.com/api/agent/collection/GB/tubes-flaps"},{"name":"Motocycle Tubes","url":"https://www.2brosparts.com/api/agent/collection/GB/motocycle-tubes"}],"links":{"page":"https://www.2brosparts.com/products/cst-400450-18-tr4-tube","buyOneNow":null,"basketWithThis":null}},"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."]}}