{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"28e008dac043","name":"FRONT SPROCKET 12 [JTF421/422.12] 520","sku":"SF421-12.DR","brand":"Dirt Racing","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":12,"price":{"amount":6.14,"formatted":"£6.14"},"summary":"FRONT DRIVE SPROCKET 12 TEETH 520. Carbon Steel S45C. Hardness HRC 50-55 After heat treating. Each sprocket is sandblasted to reduce surface tension. Meet or exceed the highest-quality compound standards set by the motorcycle industry. Part No. SF421-12.DR. Cross reference numbers ONLY. PSYCHIC MX-50212.","attributes":[{"label":"General Product Group","value":"Chain & Sprockets"},{"label":"General Product Type","value":"Sprockets & Components (Front)"},{"label":"Variant Id","value":"276432"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SF421-12_2EDR/524a609e6a4f162d.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SF421-12_2EDR/524a609e6a4f162d.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SF421-12_2EDR/85c679f4064c9463.jpg"],"description":"FRONT DRIVE SPROCKET 12 TEETH 520. Carbon Steel S45C. Hardness HRC 50-55 After heat treating. Each sprocket is sandblasted to reduce surface tension. Meet or exceed the highest-quality compound standards set by the motorcycle industry. Part No. SF421-12.DR. Cross reference numbers ONLY. PSYCHIC MX-50212.","descriptionMarkdown":"### Front Drive Sprocket 12 Teeth 520 Chain\n\n This front drive sprocket is designed for 520 pitch chains and features 12 teeth.\n Constructed from S45C carbon steel, it undergoes heat treatment to achieve a hardness of HRC 50-55.\n Each sprocket is sandblasted to reduce surface tension, ensuring optimal performance and longevity.\n Manufactured to meet or exceed the highest quality compound standards set by the motorcycle industry, this sprocket is a high-quality replacement part.\n\n#### Key Features:\n\n \n- 12-tooth front drive sprocket\n \n- Compatible with 520 pitch chains\n \n- Made from S45C carbon steel\n \n- Hardness: HRC 50-55 after heat treatment\n \n- Sandblasted finish to reduce surface tension\n \n- Meets or exceeds industry quality standards","weightGrams":null,"fitments":[{"make":"KAWASAKI","model":"KDX 175","cc":null,"notes":null,"years":"1979–1985"},{"make":"KAWASAKI","model":"KX 125","cc":null,"notes":null,"years":"1980–1993"},{"make":"SUZUKI","model":"TS 185","cc":null,"notes":null,"years":"1973–1980"},{"make":"SUZUKI","model":"TS ERN 185","cc":null,"notes":null,"years":"1980–1984"},{"make":"SUZUKI","model":"TS ERT 185","cc":null,"notes":null,"years":"1980–1984"},{"make":"SUZUKI","model":"TS ERX 185","cc":null,"notes":null,"years":"1980–1984"},{"make":"YAMAHA","model":"IT 125","cc":null,"notes":null,"years":"1980–1982"},{"make":"YAMAHA","model":"IT 175","cc":null,"notes":null,"years":"1980–1982"},{"make":"YAMAHA","model":"IT 200","cc":null,"notes":null,"years":"1985"},{"make":"YAMAHA","model":"YZ 100","cc":null,"notes":null,"years":"1977–1983"},{"make":"YAMAHA","model":"YZ 125","cc":null,"notes":null,"years":"1977–1998"}],"collections":[{"name":"Chain & Sprockets","url":"https://www.2brosparts.com/api/agent/collection/GB/chain-sprockets"},{"name":"Sprockets & Components (Front)","url":"https://www.2brosparts.com/api/agent/collection/GB/sprockets-components-front"}],"links":{"page":"https://www.2brosparts.com/products/front-sprocket-12-jtf42142212-520","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/28e008dac043:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/28e008dac043:1"}},"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."]}}