{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"19e6625813a0","name":"REAR SPROCKET STEEL HARD ZBK, C45 INDUCTIONJTR1304.42ZBK","sku":"SR1304-42.S.ZBK","brand":"JT","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":23.16,"formatted":"£23.16"},"summary":"The JTR1304.42ZBK is a rear sprocket made from heat-induction hardened C45 steel with 42 teeth and a 525 drive chain pitch. It features a unique self-cleaning design that keeps the contact area clear, significantly reducing weight compared to conventional steel rears. This sprocket lasts up to six times longer than a 7075 aluminium sprocket and greatly extends chain life by minimizing abrasive buildup. The optimized tooth geometry ensures smooth, efficient drive. The colour is black.","attributes":[{"label":"General Product Group","value":"Chain & Sprockets"},{"label":"General Product Type","value":"Sprockets & Components (Rear)"},{"label":"Variant Id","value":"277354"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR1304-42_2ES_2EZBK/6aacf3ef42cd6493.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR1304-42_2ES_2EZBK/6aacf3ef42cd6493.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR1304-42_2ES_2EZBK/7cf3511248dff603.png"],"description":"The JTR1304.42ZBK is a rear sprocket made from heat-induction hardened C45 steel with 42 teeth and a 525 drive chain pitch. It features a unique self-cleaning design that keeps the contact area clear, significantly reducing weight compared to conventional steel rears. This sprocket lasts up to six times longer than a 7075 aluminium sprocket and greatly extends chain life by minimizing abrasive buildup. The optimized tooth geometry ensures smooth, efficient drive. The colour is black.","descriptionMarkdown":"### JTR Rear Sprocket Steel Hard ZBK C45 Induction - 42 Tooth\n\nExperience the next standard in off-road durability and efficiency with the JTR Rear Sprocket. This sprocket features a unique self-cleaning profile designed to keep the contact patch clear while significantly reducing overall weight. Constructed from C45 steel that is heat-induction hardened, this sprocket is engineered to last up to six times longer than traditional 7075 aluminum sprockets. This extended lifespan not only protects your chain but also contributes to maintaining optimal lap times.\n\n**Key Features:**\n\n\t\n- Unique self-cleaning design maintains a clear contact area for consistent performance.\n\t\n- Engineered for significantly reduced weight compared to conventional steel rear sprockets.\n\t\n- Crafted from durable heat-induction hardened C45 steel for superior longevity.\n\t\n- Offers up to 6 times the lifespan of a 7075 aluminum sprocket.\n\t\n- Effectively extends chain life by minimizing abrasive buildup.\n\t\n- Features optimized tooth geometry for smooth and efficient power transfer.\n\n**Specifications:**\n\n\t\n- Material: Heat-induction hardened C45 steel\n\t\n- Tooth Count: 42\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-inductionjtr130442zbk","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/19e6625813a0:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/19e6625813a0:1"}},"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."]}}