{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"e405a57a9c12","name":"REAR SPROCKET STEEL 50 [JTR301/210.50] 520, DOUBLE DRILLED JTR301, JTR210","sku":"SR301-50.S.DR","brand":"Dirt Racing","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":14,"price":{"amount":18.17,"formatted":"£18.17"},"summary":"The Rear Drive Sprocket SR301-50.S.DR is a 50-tooth steel sprocket designed for motorcycles using 520 chain systems. It is made with C45 high-carbon steel, heat treated and sandblasted to reduce surface tension. Features a dual-hole design with Countersunk CSK 8.5 mm and CTB Plain 10.5 mm bolt-hole patterns for compatibility with various models. This sprocket is finished in powder-coated black or bright zinc plated silver, engineered for durability and consistent performance. Specifications include a tooth count of 50, chain size of 520, and part number SR301-50.S.DR. Cross-reference OEM part numbers include JTR301.50, JTR210.50, L17-0250, and MX-80350.","attributes":[{"label":"General Product Group","value":"Chain & Sprockets"},{"label":"General Product Type","value":"Sprockets & Components (Rear)"},{"label":"Variant Id","value":"278202"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR301-50_2ES_2EDR/ab781596793ede09.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR301-50_2ES_2EDR/ab781596793ede09.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR301-50_2ES_2EDR/e4670be4e10b403e.jpg"],"description":"The Rear Drive Sprocket SR301-50.S.DR is a 50-tooth steel sprocket designed for motorcycles using 520 chain systems. It is made with C45 high-carbon steel, heat treated and sandblasted to reduce surface tension. Features a dual-hole design with Countersunk CSK 8.5 mm and CTB Plain 10.5 mm bolt-hole patterns for compatibility with various models. This sprocket is finished in powder-coated black or bright zinc plated silver, engineered for durability and consistent performance. Specifications include a tooth count of 50, chain size of 520, and part number SR301-50.S.DR. Cross-reference OEM part numbers include JTR301.50, JTR210.50, L17-0250, and MX-80350.","descriptionMarkdown":"### Dirt Racing REAR SPROCKET STEEL 50 TOOTH 520 CHAIN\n\n Upgrade your motorcycle's drivetrain with the REAR SPROCKET STEEL 50.\n This high-performance rear sprocket is engineered for durability and\n precision, utilizing C45 high-carbon steel for robust construction.\n It features a heat-treated and sandblasted surface treatment designed\n to reduce surface tension, contributing to its longevity.\n\n Designed with versatility in mind, this sprocket offers a double-drilled\n configuration with two bolt-hole patterns: countersunk CSK 8.5 mm and\n CTB Plain 10.5 mm, ensuring compatibility with a range of applications.\n Available in either a powder-coated black finish or a bright zinc-plated\n silver finish, it combines functionality with aesthetic appeal.\n\n**Key Features:**\n\n \n- Constructed from C45 high-carbon steel for superior strength.\n \n- Heat-treated and sandblasted for enhanced durability.\n \n- Dual bolt-hole patterns: Countersunk CSK 8.5 mm and CTB Plain 10.5 mm.\n \n- Available in powder-coated black or bright zinc-plated silver.\n\n**Specifications:**\n\n \n- Tooth Count: 50\n \n- Chain Size Compatibility: 520\n \n- Material: Steel\n\n**Cross-Reference Part Numbers:**\n\n \n- JTR301.50\n \n- JTR210.50\n \n- L17-0250\n \n- MX-80350","weightGrams":null,"fitments":[{"make":"HONDA","model":"CRF L 250","cc":null,"notes":null,"years":"2013–2016"},{"make":"HONDA","model":"XR 250","cc":null,"notes":null,"years":"1996–2004"},{"make":"HONDA","model":"XR 400","cc":null,"notes":null,"years":"1996–2005"}],"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-50-jtr30121050-520-double-drilled-jtr301-jtr210","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/e405a57a9c12:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/e405a57a9c12:1"}},"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."]}}