{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"77ef20132747","name":"REAR SPROCKET STEEL 39 [JTR1857.39] 520","sku":"SR437-39.S.DR","brand":"Dirt Racing","mpn":null,"gtin":null,"condition":"new","inStock":false,"stock":0,"price":{"amount":18.17,"formatted":"£18.17"},"summary":"REAR SPROCKET STEEL 39 Teeth, silver finish, 520 chain size. Part Number: SR437-39.S.DR. JTR1857.39. Manufactured by Dirt Racing. Made with C45 steel high carbon steel, heat-treated and finished by hand. Sandblasted for a satin-silk finish. Meets or exceeds motorcycle industry standards. Cross reference AT-26539.","attributes":[{"label":"General Product Group","value":"Chain & Sprockets"},{"label":"General Product Type","value":"Sprockets & Components (Rear)"},{"label":"Variant Id","value":"278239"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR437-39_2ES_2EDR/6aafcf4879a1b399.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR437-39_2ES_2EDR/6aafcf4879a1b399.jpg"],"description":"REAR SPROCKET STEEL 39 Teeth, silver finish, 520 chain size. Part Number: SR437-39.S.DR. JTR1857.39. Manufactured by Dirt Racing. Made with C45 steel high carbon steel, heat-treated and finished by hand. Sandblasted for a satin-silk finish. Meets or exceeds motorcycle industry standards. Cross reference AT-26539.","descriptionMarkdown":"### Dirt Racing 39 Tooth Rear Steel Sprocket for 520 Chain - Silver\n\nThis high-quality rear steel sprocket from Dirt Racing is designed for maximum strength and minimum weight. Manufactured from C45 steel high carbon steel, it ensures durability and reliable performance. Each sprocket undergoes a heat-treatment process and is finished by hand for superior quality. The sandblasted surface treatment reduces surface tension, providing a satin-silk finish.\n\nThis sprocket meets or exceeds the highest industry standards for motorcycle components.\n\n \n- Material: C45 Steel High Carbon Steel\n \n- Number of Teeth: 39\n \n- Chain Size: 520\n \n- Color: Silver\n \n- Finish: Sandblasted for satin-silk finish\n \n- Construction: Heat-treated and hand-finished\n \n- Attributes: Maximum strength at minimum weight","weightGrams":null,"fitments":[{"make":"YAMAHA","model":"YFM RAPTOR 250","cc":null,"notes":null,"years":"2008–2013"},{"make":"YAMAHA","model":"YFM RAPTOR 350","cc":null,"notes":null,"years":"2004–2013"},{"make":"YAMAHA","model":"YFM RAPTOR R 700","cc":null,"notes":null,"years":"2006–2020"},{"make":"YAMAHA","model":"YFM WARRIOR 350","cc":null,"notes":null,"years":"1987–1988"},{"make":"YAMAHA","model":"YFZ 450","cc":null,"notes":null,"years":"2004–2013"},{"make":"YAMAHA","model":"YFZ BANSHEE 350","cc":null,"notes":null,"years":"1987–1988"},{"make":"YAMAHA","model":"YFZ R 450","cc":null,"notes":null,"years":"2009–2020"}],"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-39-jtr185739-520","buyOneNow":null,"basketWithThis":null}},"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."]}}