{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"4925b4acdbd5","name":"REAR SPROCKET 43 [1857.43] 520, SILVER","sku":"SR603-43.STEEL","brand":"Dirt Racing","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":14,"price":{"amount":14.9,"formatted":"£14.90"},"summary":"This rear steel sprocket features 43 teeth and is compatible with 520 chain systems. Constructed from high-strength C45 high carbon steel, it is engineered for durability under demanding conditions. The sprocket undergoes heat treatment, hand finishing, and sandblasting to reduce surface tension, and it is coated in a black powder finish. Designed to meet or exceed rigorous motorcycle industry compound modification standards. Features: Manufactured from C45 high carbon steel for strength and durability; Heat-treated and hand-finished for consistent quality; Sandblasted to reduce surface tension; Black powder-coated finish; Meets or exceeds motorcycle industry compound modification standards. Specifications: Tooth Count: 43; Chain Size: 520; Material: C45 high carbon steel; Finish: Black powder coat; Part Number: SR603-43.STEEL. Cross-Reference OEM Part Numbers: AT-26043.","attributes":[{"label":"General Product Group","value":"Chain & Sprockets"},{"label":"General Product Type","value":"Sprockets & Components (Rear)"},{"label":"Variant Id","value":"278676"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR603-43_2ESTEEL/df2d0ee3c614794a.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR603-43_2ESTEEL/df2d0ee3c614794a.jpg"],"description":"This rear steel sprocket features 43 teeth and is compatible with 520 chain systems. Constructed from high-strength C45 high carbon steel, it is engineered for durability under demanding conditions. The sprocket undergoes heat treatment, hand finishing, and sandblasting to reduce surface tension, and it is coated in a black powder finish. Designed to meet or exceed rigorous motorcycle industry compound modification standards. Features: Manufactured from C45 high carbon steel for strength and durability; Heat-treated and hand-finished for consistent quality; Sandblasted to reduce surface tension; Black powder-coated finish; Meets or exceeds motorcycle industry compound modification standards. Specifications: Tooth Count: 43; Chain Size: 520; Material: C45 high carbon steel; Finish: Black powder coat; Part Number: SR603-43.STEEL. Cross-Reference OEM Part Numbers: AT-26043.","descriptionMarkdown":"### Dirt Racing Rear Steel Sprocket 43 Tooth, 520 Chain - Silver\n\nUpgrade your motorcycle's drivetrain with this high-performance rear steel sprocket from Dirt Racing. Engineered for durability and reliability, this sprocket is designed to meet demanding riding conditions.\n\n**Key Features:**\n\n\t\n- Constructed from robust C45 high carbon steel for superior strength and longevity.\n\t\n- Undergoes heat treatment and hand finishing to ensure consistent quality and performance.\n\t\n- Sandblasting process reduces surface tension for enhanced durability.\n\t\n- Features a sleek black powder-coated finish for corrosion resistance and aesthetics.\n\t\n- Designed to meet or exceed rigorous motorcycle industry compound modification standards.\n\n**Specifications:**\n\n\t\n- Tooth Count: 43\n\t\n- Chain Size Compatibility: 520\n\t\n- Material: C45 High Carbon Steel\n\t\n- Finish: Black Powder Coat","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-43-185743-520-silver","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/4925b4acdbd5:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/4925b4acdbd5:1"}},"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."]}}