{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"d4298371341c","name":"CYLINDER FULL KIT 98MM YAMAHA YZ/WR-F 450 03-06, ATHENA P400485100014 478CC BIG BORE, (piston included)","sku":"56-K114.98.KITA","brand":"Athena","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":684,"formatted":"£684.00"},"summary":"ATHENA Big Bore Cylinder Kit Ø 98 mm, 478 cc - P400485100014. This kit includes a high-quality aluminum cylinder with increased bore, a complete piston with pin and rings, and all necessary gaskets. The cylinder features a motor-nicksil coating for smoothness and wear resistance. Bore Diameter 98.00 mm, Compression Ratio 12.4:1, Displacement 478 cc, Net Weight 2.36 Kg. The components are developed to withstand high temperatures, pressures, and stresses, validated by Athena technicians. The cylinder kit can be installed without modifying the engine crankcase. All Athena products must be used in compliance with specific national regulations.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Cylinder Kits"},{"label":"Variant Id","value":"252676"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K114_2E98_2EKITA/d23a7b1256ff8e6a.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K114_2E98_2EKITA/d23a7b1256ff8e6a.jpg"],"description":"ATHENA Big Bore Cylinder Kit Ø 98 mm, 478 cc - P400485100014. This kit includes a high-quality aluminum cylinder with increased bore, a complete piston with pin and rings, and all necessary gaskets. The cylinder features a motor-nicksil coating for smoothness and wear resistance. Bore Diameter 98.00 mm, Compression Ratio 12.4:1, Displacement 478 cc, Net Weight 2.36 Kg. The components are developed to withstand high temperatures, pressures, and stresses, validated by Athena technicians. The cylinder kit can be installed without modifying the engine crankcase. All Athena products must be used in compliance with specific national regulations.","descriptionMarkdown":"### Athena Big Bore Cylinder Kit 478cc for Yamaha YZ/WR-F 450\n\nUpgrade your Yamaha YZ/WR-F 450 with this Athena Big Bore Cylinder Kit. Engineered in Italy, this kit features a 98mm bore diameter, increasing displacement to 478cc for noticeable performance gains across the power curve. Athena's extensive experience in aftermarket parts ensures a high-quality, durable, and reliable component designed to meet or exceed original equipment specifications.\n\nThe cylinder is coated with Athena's proprietary motor-nicksil, a nickel-silicon coating that provides excellent smoothness and wear resistance. This kit is designed to withstand high temperatures, pressures, and stresses, validated through rigorous bench and road testing.\n\nInstallation of this big bore cylinder kit is designed to be straightforward, requiring no modifications to the engine crankcase. It includes a high-quality aluminum cylinder with an increased bore, a complete piston assembly with piston pin and rings, and all necessary gaskets for a comprehensive upgrade.\n\n**Key Features:**\n\n \n- Displacement: 478cc\n \n- Bore Diameter: 98.00 mm\n \n- Compression Ratio: 12.4:1\n \n- Motor-nicksil coating for enhanced durability and smoothness\n \n- Increased performance without compromising reliability\n \n- Includes cylinder, piston kit, and gasket set\n \n- No crankcase modifications required for installation","weightGrams":null,"fitments":[{"make":"YAMAHA","model":"WR 450F","cc":null,"notes":null,"years":"2003–2015"},{"make":"YAMAHA","model":"WRF 450","cc":null,"notes":null,"years":"2003–2006"},{"make":"YAMAHA","model":"YFZ 450","cc":null,"notes":null,"years":"2004–2013"},{"make":"YAMAHA","model":"YFZ 450S","cc":null,"notes":null,"years":"2004–2011"},{"make":"YAMAHA","model":"YFZ S 450","cc":null,"notes":null,"years":"2004–2011"},{"make":"YAMAHA","model":"YZ 450F","cc":null,"notes":null,"years":"2003–2009"},{"make":"YAMAHA","model":"YZF 450","cc":null,"notes":null,"years":"2003–2005"}],"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-98mm-yamaha-yzwr-f-450-03-06-athena-p400485100014-478cc-big-bo","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/d4298371341c:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/d4298371341c: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."]}}