{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"9d5e86b1bdeb","name":"REAR SPROCKET JTR13.39 JT 520","sku":"SR013-39.S.JT","brand":"JT","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":14.89,"formatted":"£14.89"},"summary":"JT Steel Sprockets are built from premium C49 high-carbon steel for OEM-level precision and durability. This rear sprocket features 39 teeth and a 520 drive chain pitch, finished in silver. It is engineered for long wear and consistent power transfer with a sprocket tooth profile accuracy that ensures an exact fit for broad coverage applications. Designed for durability in street, track, and off-road use.","attributes":[{"label":"General Product Group","value":"Chain & Sprockets"},{"label":"General Product Type","value":"Sprockets & Components (Rear)"},{"label":"Variant Id","value":"277114"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR013-39_2ES_2EJT/0a38a4802ec9385a.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR013-39_2ES_2EJT/0a38a4802ec9385a.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR013-39_2ES_2EJT/a3e94cf6600d3c88.jpg"],"description":"JT Steel Sprockets are built from premium C49 high-carbon steel for OEM-level precision and durability. This rear sprocket features 39 teeth and a 520 drive chain pitch, finished in silver. It is engineered for long wear and consistent power transfer with a sprocket tooth profile accuracy that ensures an exact fit for broad coverage applications. Designed for durability in street, track, and off-road use.","descriptionMarkdown":"### JT Rear Sprocket JTR13.39 for 520 Chain\n\nExperience exceptional durability and precise performance with the JT Rear Sprocket JTR13.39. Engineered from premium C49 high-carbon steel, this sprocket is built to withstand the demands of street, track, and off-road riding, delivering reliable power transfer mile after mile.\n\n#### Key Features:\n\n\t\n- Premium Material: Constructed from C49 high-carbon steel for superior wear resistance and longevity.\n\t\n- Precision Fit: Manufactured to exact OEM specifications, ensuring a perfect fit and straightforward installation.\n\t\n- Consistent Performance: Offers accurate sprocket tooth profile and dependable power transfer.\n\t\n- Durable Design: Engineered for extended use across various riding conditions.\n\n#### Specifications:\n\n\t\n- Material: C49 high-carbon steel\n\t\n- Tooth Count: 39\n\t\n- Drive Chain Pitch: 520\n\t\n- Color: Silver","weightGrams":null,"fitments":[],"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-jtr1339-jt-520","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/9d5e86b1bdeb:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/9d5e86b1bdeb: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."]}}