{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"7834e3348f0d","name":"CYLINDER FULL KIT 98MM YAMAHA YFS 450 04-11, ATHENA P400485100016 FOR 478CC BIG BORE, (Piston included)","sku":"56-K133.98.KIT","brand":"Athena","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":684,"formatted":"£684.00"},"summary":"ATHENA Big Bore Cylinder Kit with 98 mm bore for 478 cc displacement. This kit includes a high-quality aluminum cylinder, a complete piston with pin and rings, and all necessary gaskets. The cylinder features a motor-nicksil nickel-silicon coating for smoothness and wear resistance. Developed and tested by Athena's R&D Department in Italy, these kits are recognized for performance, durability, and reliability, offering increased performance without compromising original component reliability. The cylinder kit can be installed without engine crankcase modifications. Technical features: Bore Diameter 98.00 mm, Displacement 478 cc, Net Weight 1.15 Kg. Compatible with YAMAHA YFZ S 450 cc 2004-2011.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Cylinder Kits"},{"label":"Variant Id","value":"252812"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K133_2E98_2EKIT/755abec9a1cfc218.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K133_2E98_2EKIT/755abec9a1cfc218.jpg"],"description":"ATHENA Big Bore Cylinder Kit with 98 mm bore for 478 cc displacement. This kit includes a high-quality aluminum cylinder, a complete piston with pin and rings, and all necessary gaskets. The cylinder features a motor-nicksil nickel-silicon coating for smoothness and wear resistance. Developed and tested by Athena's R&D Department in Italy, these kits are recognized for performance, durability, and reliability, offering increased performance without compromising original component reliability. The cylinder kit can be installed without engine crankcase modifications. Technical features: Bore Diameter 98.00 mm, Displacement 478 cc, Net Weight 1.15 Kg. Compatible with YAMAHA YFZ S 450 cc 2004-2011.","descriptionMarkdown":"### Athena 478cc Big Bore Cylinder Kit - 98mm Bore Diameter\n\nUpgrade your motorcycle's performance with this Athena Big Bore Cylinder Kit. Engineered and designed in Italy by Athena's expert R&D Department, this kit offers a significant increase in engine displacement to 478cc, utilizing a 98mm bore diameter.\n\nThe cylinder features Athena's proprietary Mo-Nikasil coating, a nickel-silicon alloy developed for superior smoothness and exceptional wear resistance, ensuring longevity and optimal performance. This kit is recognized worldwide for its quality, durability, and reliability, delivering noticeable power gains across the entire power curve while maintaining the reliability of original components.\n\nThis comprehensive kit includes:\n\n \n- High-quality aluminum cylinder with an increased bore diameter (98.00 mm)\n \n- Complete piston assembly, including piston, piston pin, and rings\n \n- All necessary gaskets for a complete installation\n\nAthena components are rigorously tested under severe bench and road conditions to withstand the highest temperatures, pressures, and stresses. Importantly, this Big Bore Cylinder Kit can be installed without requiring any modifications to the engine crankcase.\n\n**Technical Specifications:**\n\n \n- Bore Diameter: 98.00 mm\n \n- Displacement: 478 cc\n \n- Net Weight: 1.15 Kg\n\n**Please Note:** All Athena products must be used in compliance with applicable national regulations. Athena disclaims responsibility for any improper use.","weightGrams":null,"fitments":[{"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"}],"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-yfs-450-04-11-athena-p400485100016-for-478cc-big-b","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/7834e3348f0d:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/7834e3348f0d: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."]}}