{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"0ad6cb3a693b","name":"REAR SPROCKET ALLOY RENTHAL, ULTRALITE 150U-520-51GBSI SILVER, 150-520-51GBSI","sku":"SR245-51.REN.SI","brand":"Renthal","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":47.81,"formatted":"£47.81"},"summary":"RENTHAL 150U-520-51GBSI Ultralite Rear Sprocket. Silver finish. 520 pitch, 51 teeth. Hard anodised rear chainwheels are specifically designed for road and road racing applications. CNC machined from 7075 T6 material. Features increased longevity from the hard anodizing process. Hard anodising is an integral surface coating which significantly increases the hardness and wear resistance of the chainwheel surface.","attributes":[{"label":"General Product Group","value":"Chain & Sprockets"},{"label":"General Product Type","value":"Sprockets & Components (Rear)"},{"label":"Variant Id","value":"278014"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR245-51_2EREN_2ESI/25a30e82cbfc40fe.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR245-51_2EREN_2ESI/25a30e82cbfc40fe.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR245-51_2EREN_2ESI/38543e9a92171507.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR245-51_2EREN_2ESI/611785d9eac26f98.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR245-51_2EREN_2ESI/31c9d509a66f1c4e.jpg"],"description":"RENTHAL 150U-520-51GBSI Ultralite Rear Sprocket. Silver finish. 520 pitch, 51 teeth. Hard anodised rear chainwheels are specifically designed for road and road racing applications. CNC machined from 7075 T6 material. Features increased longevity from the hard anodizing process. Hard anodising is an integral surface coating which significantly increases the hardness and wear resistance of the chainwheel surface.","descriptionMarkdown":"### Renthal Ultralite Rear Sprocket - Silver\n\nEnhance the performance and longevity of your motorcycle's drivetrain with the Renthal Ultralite Rear Sprocket. Engineered for demanding road and road racing applications, this sprocket is crafted from premium 7075 T6 aluminum, the same high-quality material used in Renthal's renowned off-road chainwheels.\n\nThe key feature of this sprocket is its hard anodized finish. This integral surface coating significantly boosts the hardness and wear resistance of the sprocket's surface, providing exceptional durability and extended service life compared to standard sprockets. The precise CNC machining ensures optimal fitment and smooth operation, contributing to efficient power transfer.\n\n \n- Material: 7075 T6 Aluminum\n \n- Finish: Hard Anodised for increased wear resistance\n \n- Application: Road and Road Racing\n \n- Color: Silver\n \n- Chain Size: 520\n\nThis Renthal Ultralite Rear Sprocket offers a superior combination of lightweight construction and robust durability, making it an ideal upgrade for riders seeking reliable performance and extended component life.","weightGrams":null,"fitments":[{"make":"HONDA","model":"XL 250","cc":null,"notes":null,"years":"1982–1987"},{"make":"HONDA","model":"XL 500","cc":null,"notes":null,"years":"1979–1984"},{"make":"HONDA","model":"XL 600","cc":null,"notes":null,"years":"1984–1994"},{"make":"HONDA","model":"XR 250","cc":null,"notes":null,"years":"1979–1983"},{"make":"HONDA","model":"XR 600R","cc":null,"notes":null,"years":"1983–1990"},{"make":"YAMAHA","model":"WR 250","cc":null,"notes":null,"years":"2000–2006"},{"make":"YAMAHA","model":"WR 250F","cc":null,"notes":null,"years":"2001–2019"},{"make":"YAMAHA","model":"WR 400F","cc":null,"notes":null,"years":"1999–2002"},{"make":"YAMAHA","model":"WR 426F","cc":null,"notes":null,"years":"1999–2002"},{"make":"YAMAHA","model":"WR 450F","cc":null,"notes":null,"years":"2003–2019"},{"make":"YAMAHA","model":"YZ 125","cc":null,"notes":null,"years":"1999–2020"},{"make":"YAMAHA","model":"YZ 250","cc":null,"notes":null,"years":"1977–2019"},{"make":"YAMAHA","model":"YZ 250F","cc":null,"notes":null,"years":"2001–2019"},{"make":"YAMAHA","model":"YZ 400","cc":null,"notes":null,"years":"1977–2002"},{"make":"YAMAHA","model":"YZ 400F","cc":null,"notes":null,"years":"1999"},{"make":"YAMAHA","model":"YZ 426","cc":null,"notes":null,"years":"2000–2002"},{"make":"YAMAHA","model":"YZ 426F","cc":null,"notes":null,"years":"2000–2002"},{"make":"YAMAHA","model":"YZ 450F","cc":null,"notes":null,"years":"2003–2019"}],"collections":[{"name":"Chain & Sprockets","url":"https://www.2brosparts.com/api/agent/collection/GB/chain-sprockets"},{"name":"Sprockets & Components (Rear)","url":"https://www.2brosparts.com/api/agent/collection/GB/sprockets-components-rear"}],"links":{"page":"https://www.2brosparts.com/products/rear-sprocket-alloy-renthal-ultralite-150u-520-51gbsi-silver-150-520-51gbsi","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/0ad6cb3a693b:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/0ad6cb3a693b: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."]}}