{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"ccd4e160ded2","name":"£7+VAT REAR SPROCKET ALLOY 49 [JTR245/251.49] 520 END OF LINE WAS £17.95","sku":"SR245-51.A.DR","brand":"Dirt Racing","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":46,"price":{"amount":11.74,"formatted":"£11.74"},"summary":"The Dirt Racing Rear Drive Sprocket SR245-51.DR is a 51-tooth alloy sprocket compatible with 520 chain size. Constructed from durable 6065-T6 aluminium and finished in silver, this sprocket offers a lightweight yet strong solution. Features include construction from 6065-T6 aluminium, silver finish, meeting or exceeding motorcycle industry compound standards, and direct OEM replacement. Specifications: Tooth Count 51, Chain Size 520, Material 6065-T6 Aluminium, Finish Silver, Part No. SR245-51.DR. Cross-Reference OEM Part Numbers: JTA251.51, JTR245.47, JTR251.47. Weight: 522 grams.","attributes":[{"label":"General Product Group","value":"Chain & Sprockets"},{"label":"General Product Type","value":"Sprockets & Components (Rear)"},{"label":"Variant Id","value":"278010"}],"image":"https://www.oro2u.com/media/catalog/product/s/r/sr245-51-a-dr-1-2.jpg","images":["https://www.oro2u.com/media/catalog/product/s/r/sr245-51-a-dr-1-2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock77256_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock77256_2.jpg","https://www.oro2u.com/media/catalog/product/s/r/sr245-51-a-dr-1-1.jpg"],"description":"The Dirt Racing Rear Drive Sprocket SR245-51.DR is a 51-tooth alloy sprocket compatible with 520 chain size. Constructed from durable 6065-T6 aluminium and finished in silver, this sprocket offers a lightweight yet strong solution. Features include construction from 6065-T6 aluminium, silver finish, meeting or exceeding motorcycle industry compound standards, and direct OEM replacement. Specifications: Tooth Count 51, Chain Size 520, Material 6065-T6 Aluminium, Finish Silver, Part No. SR245-51.DR. Cross-Reference OEM Part Numbers: JTA251.51, JTR245.47, JTR251.47. Weight: 522 grams.","descriptionMarkdown":"### Dirt Racing 51 Tooth 520 Chain Size Rear Sprocket in Silver\n\nUpgrade your motorcycle's drivetrain with this high-performance rear sprocket from Dirt Racing. Engineered for durability and optimal power transfer, this sprocket is designed to meet or exceed industry standards, providing a reliable replacement for your existing component.\n\n**Key Features:**\n\n \n- Material: Constructed from robust 6065-T6 aluminum for a lightweight yet strong build.\n \n- Finish: Features a sleek silver finish for enhanced aesthetics and corrosion resistance.\n \n- Tooth Count: A 51-tooth configuration designed to optimize acceleration and top-end speed.\n \n- Chain Compatibility: Specifically designed for use with 520 chain sizes, ensuring a precise fit and smooth operation.\n \n- Direct Replacement: Manufactured as a direct OEM replacement part, simplifying installation.\n\n**Specifications:**\n\n \n- Part Number: \n \n- Tooth Count: 51\n \n- Chain Size: 520\n \n- Material: 6065-T6 Aluminium\n \n- Finish: Silver","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/7vat-rear-sprocket-alloy-49-jtr24525149-520-end-of-line-was-1795","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/ccd4e160ded2:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/ccd4e160ded2:1"}},"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."]}}