{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"3f215f31f13b","name":"REAR SPROCKET ALLOY RENTHAL, ULTRALITE 150U-520-42GBSI SILVER","sku":"SR245-42.REN","brand":"Renthal","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":4,"price":{"amount":41.87,"formatted":"£41.87"},"summary":"REAR SPROCKET ALLOY RENTHAL, ULTRALITE 150U-520-42GBSI SILVER. Hard anodised rear chainwheel designed for road and road racing applications. CNC machined from 7075 T6 material with increased longevity from the hard anodising process. Hard anodising is an integral surface coating that significantly increases the hardness and wear resistance of the chainwheel surface.","attributes":[{"label":"General Product Group","value":"Chain & Sprockets"},{"label":"General Product Type","value":"Sprockets & Components (Rear)"},{"label":"Variant Id","value":"277912"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR245-42_2EREN/7d2a6d7044639402.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR245-42_2EREN/7d2a6d7044639402.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR245-42_2EREN/881864a560ddd8ee.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR245-42_2EREN/ec5635816a80cff8.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/SR245-42_2EREN/8f818eda8c1804d9.jpg"],"description":"REAR SPROCKET ALLOY RENTHAL, ULTRALITE 150U-520-42GBSI SILVER. Hard anodised rear chainwheel designed for road and road racing applications. CNC machined from 7075 T6 material with increased longevity from the hard anodising process. Hard anodising is an integral surface coating that significantly increases the hardness and wear resistance of the chainwheel surface.","descriptionMarkdown":"### Renthal Ultralite Rear Sprocket 520 Pitch 42 Tooth Silver\n\nThe Renthal Ultralite Rear Sprocket is engineered for superior performance in both road and road racing applications. Crafted from the same high-grade 7075 T6 aluminum used in their offroad sprockets, this sprocket offers exceptional durability and reduced weight.\n\n**Key Features:**\n\n \n- Ultralite Design: Significantly reduces unsprung weight for improved acceleration and handling.\n \n- 7075 T6 Aluminum Construction: Provides excellent strength-to-weight ratio for demanding use.\n \n- Hard Anodised Finish: A deep, integral surface coating that dramatically enhances hardness and wear resistance, ensuring extended lifespan.\n \n- CNC Machined: Precision manufactured for perfect fit and optimal chain engagement.\n \n- 520 Pitch: Designed to work with 520 pitch chains.\n \n- 42 Tooth Count: Provides a specific gear ratio for enhanced performance.\n \n- Silver Color: Offers a clean, high-performance aesthetic.\n\nRenthal's hard anodising process is a critical element, creating a surface that stands up to the rigors of high-speed riding and frequent gear changes, offering increased longevity over standard sprockets.","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":"1979–1989"},{"make":"HONDA","model":"XR 350","cc":null,"notes":null,"years":"1983–1987"},{"make":"HONDA","model":"XR 500R","cc":null,"notes":null,"years":"1979–1985"},{"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":"1977–2020"},{"make":"YAMAHA","model":"YZ 250F","cc":null,"notes":null,"years":"2001–2020"},{"make":"YAMAHA","model":"YZ 250FX","cc":null,"notes":null,"years":"2015–2019"},{"make":"YAMAHA","model":"YZ 250X","cc":null,"notes":null,"years":"2016–2019"},{"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-alloy-renthal-ultralite-150u-520-42gbsi-silver","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/3f215f31f13b:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/3f215f31f13b: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. 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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."]}}