{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"e424acce286e","name":"REAR SPROCKET ALLOY 51 [JTR460.51] 520 SILVER","sku":"SR460-51.DR.B","brand":"Dirt Racing","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":55,"price":{"amount":20.69,"formatted":"£20.69"},"summary":"REAR SPROCKET ALLOY 51 [JTR460.51] 520 SILVER. A rear drive sprocket in a natural silver finish with 51 teeth and 520 chain pitch, produced from C49 high-carbon steel. Fully heat-treated and precision machined for durability and accurate fit, it is intended as a direct replacement for the original rear sprocket. Features high-carbon steel construction for durability, fully heat-treated and precision machined, direct replacement fitment, and corrosion-resistant natural silver finish. Specifications include reference JTR460.51, rear position, 520 chain pitch, 51 tooth count, C49 high-carbon steel material, 134.0 mm centre bore (ID), 150.0 mm pitch circle diameter (PCD), 6 x 8.5 mm bolt holes, and a natural silver (zinc plated) colour/finish.","attributes":[{"label":"General Product Group","value":"Chain & Sprockets"},{"label":"General Product Type","value":"Sprockets & Components (Rear)"},{"label":"Variant Id","value":"278423"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock77669_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock77669_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock77669_2.jpg"],"description":"REAR SPROCKET ALLOY 51 [JTR460.51] 520 SILVER. A rear drive sprocket in a natural silver finish with 51 teeth and 520 chain pitch, produced from C49 high-carbon steel. Fully heat-treated and precision machined for durability and accurate fit, it is intended as a direct replacement for the original rear sprocket. Features high-carbon steel construction for durability, fully heat-treated and precision machined, direct replacement fitment, and corrosion-resistant natural silver finish. Specifications include reference JTR460.51, rear position, 520 chain pitch, 51 tooth count, C49 high-carbon steel material, 134.0 mm centre bore (ID), 150.0 mm pitch circle diameter (PCD), 6 x 8.5 mm bolt holes, and a natural silver (zinc plated) colour/finish.","descriptionMarkdown":"### Dirt Racing Rear Alloy Sprocket 51 Tooth 520 Chain Pitch Silver\n\nUpgrade your motorcycle's drive system with this high-quality rear alloy sprocket from Dirt Racing. Designed for durability and performance, this sprocket features 51 teeth and a 520 chain pitch, making it a direct replacement for your original rear sprocket on compatible models.\n\n**Key Features:**\n\n\t\n- Durable Construction: Crafted from C49 high-carbon steel for long-lasting wear resistance.\n\t\n- Precision Machined: Fully heat-treated and precision machined to ensure accurate fitment and optimal performance.\n\t\n- Direct Replacement: Engineered as a direct replacement for your motorcycle's original rear sprocket.\n\t\n- Corrosion Resistant Finish: Features a natural silver, zinc-plated finish to resist corrosion and maintain its appearance.\n\n**Specifications:**\n\n\t\n- Reference: JTR460.51\n\t\n- Position: Rear\n\t\n- Chain Pitch: 520\n\t\n- Tooth Count: 51\n\t\n- Material: C49 High-Carbon Steel\n\t\n- Centre Bore (ID): 134.0 mm\n\t\n- Pitch Circle Diameter (PCD): 150.0 mm\n\t\n- Bolt Holes: 6 x 8.5 mm\n\t\n- Colour/Finish: Natural Silver (Zinc Plated)","weightGrams":null,"fitments":[{"make":"KAWASAKI","model":"KDX 175","cc":null,"notes":null,"years":"1979–1985"},{"make":"KAWASAKI","model":"KDX 200","cc":null,"notes":null,"years":"1986–2006"},{"make":"KAWASAKI","model":"KDX 220","cc":null,"notes":null,"years":"1997–2005"},{"make":"KAWASAKI","model":"KDX 250","cc":null,"notes":null,"years":"1982–1993"},{"make":"KAWASAKI","model":"KDX 420","cc":null,"notes":null,"years":"1980"},{"make":"KAWASAKI","model":"KLX 250","cc":null,"notes":null,"years":"1979–1994"},{"make":"KAWASAKI","model":"KLX 300","cc":null,"notes":null,"years":"1997–2003"},{"make":"KAWASAKI","model":"KLX 300R","cc":null,"notes":null,"years":"1997–2008"},{"make":"KAWASAKI","model":"KLX 450R","cc":null,"notes":null,"years":"2008–2021"},{"make":"KAWASAKI","model":"KLX 650","cc":null,"notes":null,"years":"1993–1996"},{"make":"KAWASAKI","model":"KX 125","cc":null,"notes":null,"years":"1980–2008"},{"make":"KAWASAKI","model":"KX 250","cc":null,"notes":null,"years":"1979–2008, 2019–2025"},{"make":"KAWASAKI","model":"KX 250F","cc":null,"notes":null,"years":"2004–2019"},{"make":"KAWASAKI","model":"KX 250X","cc":null,"notes":null,"years":"2021–2025"},{"make":"KAWASAKI","model":"KX 450F","cc":null,"notes":null,"years":"2006–2025"},{"make":"KAWASAKI","model":"KX 450X","cc":null,"notes":null,"years":"2021–2025"},{"make":"KAWASAKI","model":"KX 500","cc":null,"notes":null,"years":"1983–2004"},{"make":"KAWASAKI","model":"KX K1 K5 L1 125","cc":null,"notes":null,"years":"1994–2008"},{"make":"SUZUKI","model":"RM-Z 250","cc":null,"notes":null,"years":"2004–2009"}],"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-alloy-51-jtr46051-520-silver","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/e424acce286e:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/e424acce286e: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."]}}