{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"15161ed42382","name":"REAR SPROCKET STEEL 42 [JTR245/251] 520, DOUBLE DRILLED [JTR245.42 / JTR251.42]","sku":"SR245-42.S.DR","brand":"Dirt Racing","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":8,"price":{"amount":14.9,"formatted":"£14.90"},"summary":"REAR DRIVE SPROCKET STEEL 42 TEETH 520. Double drilled with 2 sets of fixing holes, countersunk CSK and plain. Made with C45 high-carbon steel. Each sprocket is heat treated and sandblasted to lower surface tension. Meets or exceeds the highest-quality compound standards set by the motorcycle industry. Finished in Powder Coated Black or Silver BZP bright zinc plated. Cross reference numbers: L17-6542, JTR245, JTR245/2, JTR251, JTR251/2, RENTHAL 150, WFC9339. Part No. SR245-42.S.DR. Manufacturer: Dirt Racing.","attributes":[{"label":"General Product Group","value":"Chain & Sprockets"},{"label":"General Product Type","value":"Sprockets & Components (Rear)"},{"label":"Variant Id","value":"277913"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR245-42_2ES_2EDR/f58e8f1d043c3ed4.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR245-42_2ES_2EDR/f58e8f1d043c3ed4.jpg"],"description":"REAR DRIVE SPROCKET STEEL 42 TEETH 520. Double drilled with 2 sets of fixing holes, countersunk CSK and plain. Made with C45 high-carbon steel. Each sprocket is heat treated and sandblasted to lower surface tension. Meets or exceeds the highest-quality compound standards set by the motorcycle industry. Finished in Powder Coated Black or Silver BZP bright zinc plated. Cross reference numbers: L17-6542, JTR245, JTR245/2, JTR251, JTR251/2, RENTHAL 150, WFC9339. Part No. SR245-42.S.DR. Manufacturer: Dirt Racing.","descriptionMarkdown":"### Dirt Racing Steel Rear Sprocket - 42 Tooth, 520 Chain, Double Drilled\n\nThis high-quality steel rear drive sprocket is designed for optimal performance and durability. Featuring 42 teeth and a 520 chain size, it offers a reliable upgrade for your motorcycle's drivetrain. The sprocket is constructed from C45 high-carbon steel, ensuring robustness and longevity. Each sprocket undergoes heat treatment and sandblasting to reduce surface tension, meeting or exceeding the highest industry standards for motorcycle components.\n\nThis sprocket offers a unique double drilled design with two sets of fixing holes: countersunk (CSK) and plain, providing versatile installation options. It is finished in either powder-coated black or bright zinc plated silver (BZP), as shown in the product image. As a high-quality replacement part, it comes with a guarantee of satisfaction.\n\n#### Key Features:\n\n \n- Material: C45 High-Carbon Steel\n \n- Tooth Count: 42\n \n- Chain Size: 520\n \n- Design: Double Drilled (Countersunk & Plain fixing holes)\n \n- Finish: Powder Coated Black or Bright Zinc Plated (BZP)\n \n- Manufacturing: Heat treated and sandblasted\n \n- Standards: Meets or exceeds motorcycle industry quality standards","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":"1979–1989"},{"make":"HONDA","model":"XR 350","cc":null,"notes":null,"years":"1983–1987"},{"make":"HONDA","model":"XR 500R","cc":null,"notes":null,"years":"1979–1985"},{"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":"1977–2020"},{"make":"YAMAHA","model":"YZ 250F","cc":null,"notes":null,"years":"2001–2020"},{"make":"YAMAHA","model":"YZ 250FX","cc":null,"notes":null,"years":"2015–2019"},{"make":"YAMAHA","model":"YZ 250X","cc":null,"notes":null,"years":"2016–2019"},{"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-steel-42-jtr245251-520-double-drilled-jtr24542-jtr25142","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/15161ed42382:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/15161ed42382:1"}},"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."]}}