{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"a15a91a0084d","name":"YAMAHA YZ / YZF / WR / WRF 125 / 250 / 400 / 426 / 450 1999 - 2022 BLACK REAR SPROCKET 51 TOOTH","sku":"WF.245.BK51","brand":"Supersprox","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":59.86,"formatted":"£59.86"},"summary":"Supersprox Works-Light rear sprocket. 51 tooth. 7075-T651 aerospace aluminum construction for durability. CNC machined for precise fit. 67% lighter than steel sprockets. Features an exceptionally hard wearing surface and dirt-clearing grooves for increased chain and sprocket life. Anodized anti-corrosion surface with a hard coating for prolonged system life. Patented tooth profile increases chain life up to 15%. Finished in wear-resistant, anodized black for a factory bike look. Designed for Supercross, Motocross, and Off-Road bikes.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/yamaha-yz-yzf-wr-wrf-125-250-400-426-450-1999-2018-black-rear-sprocket-51-tooth-8316-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/yamaha-yz-yzf-wr-wrf-125-250-400-426-450-1999-2018-black-rear-sprocket-51-tooth-8316-p.jpg"],"description":"Supersprox Works-Light rear sprocket. 51 tooth. 7075-T651 aerospace aluminum construction for durability. CNC machined for precise fit. 67% lighter than steel sprockets. Features an exceptionally hard wearing surface and dirt-clearing grooves for increased chain and sprocket life. Anodized anti-corrosion surface with a hard coating for prolonged system life. Patented tooth profile increases chain life up to 15%. Finished in wear-resistant, anodized black for a factory bike look. Designed for Supercross, Motocross, and Off-Road bikes.","descriptionMarkdown":"### Supersprox Works-Light 51 Tooth Black Rear Sprocket\n\nUpgrade your drivetrain with the Supersprox Works-Light rear sprocket. Engineered for riders who demand both performance and longevity, this sprocket is precision CNC machined from 7075-T651 aerospace-grade aluminum. This advanced material selection ensures maximum durability while maintaining an incredibly lightweight profile, coming in 67% lighter than a standard steel sprocket.\n\nThe Works-Light design is specifically optimized for Motocross, Supercross, and off-road riding. By utilizing a patented tooth profile, this sprocket is engineered to increase the overall lifespan of your chain by up to 15%. Integrated mud-clearing grooves prevent debris buildup, ensuring consistent power delivery and reduced wear during the harshest riding conditions.\n\n### Key Features\n\n \n- Aerospace Material: Constructed from 7075-T651 aluminum for a superior strength-to-weight ratio.\n \n- Precision Engineering: CNC machined to tight tolerances for perfect concentricity and accurate fitment.\n \n- Extended Longevity: Features dirt-clearing grooves and a specialized tooth profile to protect your chain and sprocket system.\n \n- Weight Reduction: Designed for competitive performance, weighing significantly less than steel alternatives to reduce rotating mass.\n \n- Factory Finish: Finished with a durable, anodized anti-corrosion coating that provides a high-end factory look while resisting environmental wear.\n \n- Optimized Performance: Specifically designed to meet the rigorous demands of off-road and motocross racing.","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/yamaha-yz-yzf-wr-wrf-125-250-400-426-450-1999-2022-black-rear-sprocket-51-tooth","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/a15a91a0084d:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/a15a91a0084d: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."]}}