{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"0d34fa8ca221","name":"REAR SPROCKET STEEL JTR251.51SC, LIGHTWEIGHT SELF-CLEANING","sku":"SR245-51.JT.S.SC","brand":"JT","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":11,"price":{"amount":21.28,"formatted":"£21.28"},"summary":"The next standard in MX durability and efficiency: a unique self-cleaning profile keeps the contact patch clear while trimming weight. Heat-induction hardened C45 steel lasts up to six times longer than 7075 aluminium, protecting your chain and your lap times. Features: Unique self-cleaning design keeps contact area clear. Significantly reduced weight versus conventional steel rears. Heat-induction hardened C45 steel construction. Lasts up to 6x longer than a 7075-aluminium sprocket. Greatly extends chain life by minimizing abrasive buildup. Optimized tooth geometry for smooth, efficient drive. Specifications: Material: Heat-induction hardened C45 steel. Tooth count: 51. Drive chain pitch: 520. Colour: Black.","attributes":[{"label":"General Product Group","value":"Chain & Sprockets"},{"label":"General Product Type","value":"Sprockets & Components (Rear)"},{"label":"Variant Id","value":"291121"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR245-51_2EJT_2ES_2ESC/45ada250739355d4.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR245-51_2EJT_2ES_2ESC/45ada250739355d4.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR245-51_2EJT_2ES_2ESC/b5048e4d2ae25e09.png"],"description":"The next standard in MX durability and efficiency: a unique self-cleaning profile keeps the contact patch clear while trimming weight. Heat-induction hardened C45 steel lasts up to six times longer than 7075 aluminium, protecting your chain and your lap times. Features: Unique self-cleaning design keeps contact area clear. Significantly reduced weight versus conventional steel rears. Heat-induction hardened C45 steel construction. Lasts up to 6x longer than a 7075-aluminium sprocket. Greatly extends chain life by minimizing abrasive buildup. Optimized tooth geometry for smooth, efficient drive. Specifications: Material: Heat-induction hardened C45 steel. Tooth count: 51. Drive chain pitch: 520. Colour: Black.","descriptionMarkdown":"### JT Rear Steel Sprocket - Lightweight Self-Cleaning\n\nExperience the next standard in off-road motorcycle durability and efficiency with the JT Lightweight Self-Cleaning Rear Sprocket. This sprocket is engineered with a unique self-cleaning profile designed to keep the contact patch clear, enhancing performance and longevity.\n\nCrafted from heat-induction hardened C45 steel, this sprocket offers exceptional durability. It is designed to last up to six times longer than traditional 7075 aluminum sprockets, significantly protecting your chain and helping to maintain optimal lap times.\n\nThe optimized tooth geometry ensures a smooth and efficient drive, while the design greatly extends chain life by minimizing abrasive buildup.\n\n#### Key Features:\n\n\t\n- Unique self-cleaning design keeps the contact area clear.\n\t\n- Significantly reduced weight compared to conventional steel rear sprockets.\n\t\n- Constructed from heat-induction hardened C45 steel for superior durability.\n\t\n- Lasts up to 6 times longer than a 7075 aluminum sprocket.\n\t\n- Helps extend chain life by minimizing abrasive buildup.\n\t\n- Optimized tooth geometry for smooth, efficient power delivery.\n\n#### Specifications:\n\n\t\n- Material: Heat-induction hardened C45 steel\n\t\n- Tooth Count: 51\n\t\n- Drive Chain Pitch: 520\n\t\n- Color: Black","weightGrams":null,"fitments":[{"make":"HONDA","model":"XL 250","cc":null,"notes":null,"years":"1982–1987"},{"make":"HONDA","model":"XL 500","cc":null,"notes":null,"years":"1979–1984"},{"make":"HONDA","model":"XL 600","cc":null,"notes":null,"years":"1984–1994"},{"make":"HONDA","model":"XR 250","cc":null,"notes":null,"years":"1979–1983"},{"make":"HONDA","model":"XR 600R","cc":null,"notes":null,"years":"1983–1990"},{"make":"YAMAHA","model":"WR 250","cc":null,"notes":null,"years":"2000–2006"},{"make":"YAMAHA","model":"WR 250F","cc":null,"notes":null,"years":"2001–2019"},{"make":"YAMAHA","model":"WR 400F","cc":null,"notes":null,"years":"1999–2002"},{"make":"YAMAHA","model":"WR 426F","cc":null,"notes":null,"years":"1999–2002"},{"make":"YAMAHA","model":"WR 450F","cc":null,"notes":null,"years":"2003–2019"},{"make":"YAMAHA","model":"YZ 125","cc":null,"notes":null,"years":"1999–2020"},{"make":"YAMAHA","model":"YZ 250","cc":null,"notes":null,"years":"1977–2019"},{"make":"YAMAHA","model":"YZ 250F","cc":null,"notes":null,"years":"2001–2019"},{"make":"YAMAHA","model":"YZ 400","cc":null,"notes":null,"years":"1977–2002"},{"make":"YAMAHA","model":"YZ 400F","cc":null,"notes":null,"years":"1999"},{"make":"YAMAHA","model":"YZ 426","cc":null,"notes":null,"years":"2000–2002"},{"make":"YAMAHA","model":"YZ 426F","cc":null,"notes":null,"years":"2000–2002"},{"make":"YAMAHA","model":"YZ 450F","cc":null,"notes":null,"years":"2003–2019"}],"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-jtr25151sc-lightweight-self-cleaning","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/0d34fa8ca221:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/0d34fa8ca221:1"}},"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."]}}