{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"92c7039b1ccf","name":"CYLINDER FULL KIT 83MM YAMAHA YZ 250 01-07, ATHENA P400485100012 290CC BIG BORE, (piston Included)","sku":"56-K103.83.K.A1","brand":"Athena","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":653.87,"formatted":"£653.87"},"summary":"ATHENA Big Bore Cylinder Kit for Yamaha WR F 250 cc 2001-2012 and YZ F 250 cc 2001-2007. This kit features an Ø 83 mm bore and 290 cc displacement, including a complete piston, pin, rings, and necessary gaskets. The cylinder is coated with motor-nicksil, a nickel-silicon coating developed by Athena for smoothness and wear resistance. Athena's cylinder kits are engineered in Italy and designed to increase performance while maintaining original component reliability. The components are built to withstand high temperatures, pressures, and stresses. Installation does not require engine crankcase modifications. Technical features include: Bore Diameter 83.00 mm, Compression Ratio 12.5:1, Displacement 290 cc, Net Weight 1.90 Kg.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Cylinder Kits"},{"label":"General Size","value":"83mm"},{"label":"Variant Id","value":"252599"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K103_2E83_2EK_2EA1/b0624633e1e692d3.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K103_2E83_2EK_2EA1/b0624633e1e692d3.jpg"],"description":"ATHENA Big Bore Cylinder Kit for Yamaha WR F 250 cc 2001-2012 and YZ F 250 cc 2001-2007. This kit features an Ø 83 mm bore and 290 cc displacement, including a complete piston, pin, rings, and necessary gaskets. The cylinder is coated with motor-nicksil, a nickel-silicon coating developed by Athena for smoothness and wear resistance. Athena's cylinder kits are engineered in Italy and designed to increase performance while maintaining original component reliability. The components are built to withstand high temperatures, pressures, and stresses. Installation does not require engine crankcase modifications. Technical features include: Bore Diameter 83.00 mm, Compression Ratio 12.5:1, Displacement 290 cc, Net Weight 1.90 Kg.","descriptionMarkdown":"### Athena Big Bore Cylinder Kit 290cc for Yamaha YZ/WRF 250\n\n Upgrade your motorcycle's performance with the Athena Big Bore Cylinder Kit. This high-quality kit is engineered in Italy by Athena's dedicated R&D Department, utilizing advanced tools for design and testing to ensure optimal performance and reliability.\n\n#### Key Features:\n\n \n- Increased Displacement: Boost your engine's power with a larger bore diameter of 83mm, increasing displacement to 290cc.\n \n- Durable Motor Nicksil Coating: The cylinder features Athena's proprietary Motor Nicksil coating, a nickel-silicon surface developed for superior smoothness and exceptional wear resistance.\n \n- Enhanced Performance: Experience a noticeable increase in performance across the entire power curve while maintaining the reliability of original components.\n \n- Complete Kit: This comprehensive kit includes a high-quality aluminum cylinder with an increased bore, a complete piston assembly (piston, pin, and rings), and all necessary gaskets for a straightforward installation.\n \n- High-Temperature Resistance: All components are designed and validated to withstand extreme temperatures, pressures, and stresses, confirmed through rigorous bench and road testing.\n \n- No Crankcase Modifications Required: Install this cylinder kit without needing to make any alterations to your engine's crankcase.\n\n#### Technical Specifications:\n\n \n- Bore Diameter: 83.00 mm\n \n- Compression Ratio: 12.5:1\n \n- Displacement: 290 cc\n \n- Net Weight: 1.90 kg\n\n Athena products are recognized globally for their performance, durability, and reliability. Please ensure that all Athena products are used in compliance with the specific national regulations of the country where they are marketed or sold.","weightGrams":null,"fitments":[{"make":"GAS-GAS","model":"EC R 250","cc":null,"notes":null,"years":"2010–2015"},{"make":"YAMAHA","model":"WR 250F","cc":null,"notes":null,"years":"2001–2014"},{"make":"YAMAHA","model":"WRF 250","cc":null,"notes":null,"years":"2001–2013"},{"make":"YAMAHA","model":"YZ 250F","cc":null,"notes":null,"years":"2001–2013"},{"make":"YAMAHA","model":"YZF 250","cc":null,"notes":null,"years":"2001–2013"}],"collections":[{"name":"Engine","url":"https://www.2brosparts.com/api/agent/collection/GB/engine"},{"name":"Cylinder Kits","url":"https://www.2brosparts.com/api/agent/collection/GB/cylinder-kits"}],"links":{"page":"https://www.2brosparts.com/products/cylinder-full-kit-83mm-yamaha-yz-250-01-07-athena-p400485100012-290cc-big-bore-p","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/92c7039b1ccf:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/92c7039b1ccf: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."]}}