{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"7d72134091d3","name":"REAR SPROCKET STEEL JTR28.42, C49 High Carbon Steel 520","sku":"SR28-42.S.JT","brand":"JT","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":15.85,"formatted":"£15.85"},"summary":"REAR SPROCKET STEEL JTR28.42, C45 High Carbon Steel 520. Features a unique self-cleaning design that keeps the contact area clear and significantly reduced weight versus conventional steel rears. Constructed from heat-induction hardened C45 steel, it lasts up to 6x longer than a 7075-aluminium sprocket and greatly extends chain life by minimizing abrasive buildup. Optimized tooth geometry ensures smooth, efficient drive. Specifications: Material: Heat-induction hardened C45 steel, Tooth count: 42, Drive chain pitch: 520, Colour: Black. Weight: 686 grams.","attributes":[{"label":"General Product Group","value":"Chain & Sprockets"},{"label":"General Product Type","value":"Sprockets & Components (Rear)"},{"label":"Variant Id","value":"278126"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR28-42_2ES_2EJT/ac71cd01f7075327.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR28-42_2ES_2EJT/ac71cd01f7075327.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR28-42_2ES_2EJT/f27b4af8c5af84fe.png"],"description":"REAR SPROCKET STEEL JTR28.42, C45 High Carbon Steel 520. Features a unique self-cleaning design that keeps the contact area clear and significantly reduced weight versus conventional steel rears. Constructed from heat-induction hardened C45 steel, it lasts up to 6x longer than a 7075-aluminium sprocket and greatly extends chain life by minimizing abrasive buildup. Optimized tooth geometry ensures smooth, efficient drive. Specifications: Material: Heat-induction hardened C45 steel, Tooth count: 42, Drive chain pitch: 520, Colour: Black. Weight: 686 grams.","descriptionMarkdown":"### JT Steel Rear Sprocket 520 Pitch 42 Tooth Black\n\nExperience the next level of motocross durability and efficiency with this JT Steel Rear Sprocket. Engineered with a unique self-cleaning profile, it actively maintains a clear contact patch while significantly reducing overall weight. The heat-induction hardened C45 steel construction is designed for exceptional longevity, lasting up to six times longer than conventional 7075 aluminum sprockets. This extended lifespan not only protects your chain but also helps maintain optimal lap times by minimizing abrasive buildup and ensuring smooth, efficient power transfer.\n\n**Key Features:**\n\n\t\n- Innovative self-cleaning design that keeps the drive area clear of debris.\n\t\n- Weight significantly reduced compared to traditional steel rear sprockets.\n\t\n- Constructed from robust, heat-induction hardened C45 steel for superior resilience.\n\t\n- Offers an extended service life, outperforming 7075-aluminum sprockets by up to 6 times.\n\t\n- Contributes to a greatly extended chain life by minimizing the impact of abrasive buildup.\n\t\n- Features optimized tooth geometry for a smooth and highly efficient drive system.\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: 520\n\t\n- Color: Black","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-steel-jtr2842-c49-high-carbon-steel-520","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/7d72134091d3:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/7d72134091d3:1"}},"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."]}}