{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"4873aaf176dc","name":"REAR SPROCKET STEEL HARD ZBK, C45 INDUCTIONJTR1307.41ZBK","sku":"SR1307-41.S.ZBK","brand":"JT","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":22.73,"formatted":"£22.73"},"summary":"Unique self-cleaning profile keeps the contact patch clear while trimming weight. Heat-induction hardened C45 steel construction with 41 teeth and a 525 drive chain pitch. This black rear sprocket lasts up to six times longer than 7075 aluminium, greatly extending chain life by minimizing abrasive buildup. Optimized tooth geometry ensures smooth, efficient drive.","attributes":[{"label":"General Product Group","value":"Chain & Sprockets"},{"label":"General Product Type","value":"Sprockets & Components (Rear)"},{"label":"Variant Id","value":"277371"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR1307-41_2ES_2EZBK/d20ddb82cd91eee1.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR1307-41_2ES_2EZBK/d20ddb82cd91eee1.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR1307-41_2ES_2EZBK/1288bea2be3e76ff.png"],"description":"Unique self-cleaning profile keeps the contact patch clear while trimming weight. Heat-induction hardened C45 steel construction with 41 teeth and a 525 drive chain pitch. This black rear sprocket lasts up to six times longer than 7075 aluminium, greatly extending chain life by minimizing abrasive buildup. Optimized tooth geometry ensures smooth, efficient drive.","descriptionMarkdown":"### JT Hardened Steel Rear Sprocket - Black\n\nExperience the next standard in motorcycle drivetrain durability and efficiency with this JT Hardened Steel Rear Sprocket. Engineered for demanding use, this sprocket features a unique self-cleaning profile that keeps the contact patch clear of debris, enhancing performance and reducing wear. Its innovative design also contributes to a significantly reduced weight compared to conventional steel sprockets.\n\nConstructed from C45 steel that has undergone heat-induction hardening, this sprocket is built to last. It offers exceptional longevity, potentially lasting up to six times longer than sprockets made from 7075 aluminum. This extended lifespan not only protects your chain from premature wear caused by abrasive buildup but also helps maintain optimal lap times.\n\nThe optimized tooth geometry ensures smooth and efficient power transfer from your chain to the rear wheel, contributing to a refined riding experience.\n\n### Key Features:\n\n\t\n- Unique self-cleaning design maintains a clear contact area\n\t\n- Noticeably lighter weight compared to traditional steel rear sprockets\n\t\n- Robust construction using heat-induction hardened C45 steel\n\t\n- Up to 6x longer lifespan than 7075-aluminium sprockets\n\t\n- Helps extend chain life by minimizing abrasive buildup\n\t\n- Tooth profile engineered for smooth and efficient drive\n\n### Specifications:\n\n\t\n- Material: Heat-induction hardened C45 steel\n\t\n- Tooth Count: 41\n\t\n- Drive Chain Pitch: 525\n\t\n- Color: Black","weightGrams":null,"fitments":[{"make":"YAMAHA","model":"IT 465","cc":null,"notes":null,"years":"1980"},{"make":"YAMAHA","model":"IT G 250","cc":null,"notes":null,"years":"1980"},{"make":"YAMAHA","model":"YZ 250","cc":null,"notes":null,"years":"1977–2019"},{"make":"YAMAHA","model":"YZ 250F","cc":null,"notes":null,"years":"1979"},{"make":"YAMAHA","model":"YZ 400","cc":null,"notes":null,"years":"1977–2002"},{"make":"YAMAHA","model":"YZ 465","cc":null,"notes":null,"years":"1980–1982"}],"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-hard-zbk-c45-inductionjtr130741zbk","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/4873aaf176dc:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/4873aaf176dc: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."]}}