{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"073209bbba15","name":"REAR SPROCKET BLACK ALLOY RENTHAL 49T, 2025 GASGAS/HUSQVARNA/KTM, ULTRALITE 518U-420-49GPBK","sku":"SR518-49.REN.BK","brand":"Renthal","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":6,"price":{"amount":47.81,"formatted":"£47.81"},"summary":"Renthal Ultralite 518U rear sprocket. 49 teeth. Black alloy. Precision CNC machined in Manchester, UK from 7075 T6 aluminium. Offers a weight reduction of 66% compared to steel alternatives. Engineered with tight tolerances for accurate fitment and superior load dispersion. Designed with optimised tooth profiling for maximum power transfer. Features hard wearing surface treatment for extended durability. Used by more factory race teams than any other aluminium sprocket brand.","attributes":[{"label":"Variant Id","value":"346829"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR518-49_2EREN_2EBK/1a49e4b3dd42a9ac.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR518-49_2EREN_2EBK/1a49e4b3dd42a9ac.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR518-49_2EREN_2EBK/bff3fe279f80f9d6.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR518-49_2EREN_2EBK/14fe29b46a8cf4aa.jpg"],"description":"Renthal Ultralite 518U rear sprocket. 49 teeth. Black alloy. Precision CNC machined in Manchester, UK from 7075 T6 aluminium. Offers a weight reduction of 66% compared to steel alternatives. Engineered with tight tolerances for accurate fitment and superior load dispersion. Designed with optimised tooth profiling for maximum power transfer. Features hard wearing surface treatment for extended durability. Used by more factory race teams than any other aluminium sprocket brand.","descriptionMarkdown":"### Renthal Ultralite 518U Series Rear Sprocket - 49 Tooth, Black\n\nUpgrade your motorcycle's performance with the Renthal Ultralite 518U Series Rear Sprocket. This premium sprocket is precision CNC machined in the UK from high-strength 7075 T6 aluminium, providing a significant weight reduction of 66% compared to traditional steel sprockets. Engineered with exceptionally tight tolerances, it ensures accurate fitment and superior load dispersion, maximizing power transfer to the rear wheel.\n\n**Key Features:**\n\n\t\n- Constructed from high-strength 7075 T6 aluminium for durability and lightness.\n\t\n- Offers a 66% weight saving over equivalent steel sprockets.\n\t\n- CNC machined to extremely tight tolerances for a precise fit.\n\t\n- Computer-engineered for optimal concentricity and performance.\n\t\n- Designed for superior load dispersion and efficient power transfer.\n\t\n- Features a hard-wearing surface treatment for extended durability and longevity.\n\t\n- Trusted by more factory race teams than any other aluminium sprocket brand, a testament to its quality and performance.","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/rear-sprocket-black-alloy-renthal-49t-2025-gasgashusqvarnaktm-ultralite-518u-420","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/073209bbba15:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/073209bbba15:1"}},"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."]}}