{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"40f74e5b2c98","name":"CYLINDER FULL KIT 83MM YAMAHA YZ 250 08-13, ATHENA P400485100026 290CC BIG BORE, (piston included)","sku":"56-K103.83.K.A2","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 Ø 83 mm, 290 cc - P400485100026. This kit features a high-quality aluminum cylinder with increased bore, a complete piston with pin and rings, and all necessary gaskets. The cylinder is coated with motor-nicksil, a nickel-silicon coating developed by Athena for smoothness and wear resistance. The kit is designed to withstand high temperatures, pressures, and stresses, and can be installed without engine crankcase modifications. Technical features: Bore Diameter 83.00 mm, Compression Ratio 12.5:1, Displacement 290 cc, Net Weight 1.70 Kg.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Cylinder Kits"},{"label":"General Size","value":"83mm"},{"label":"Variant Id","value":"252600"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K103_2E83_2EK_2EA2/7b283b59b6b8b626.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K103_2E83_2EK_2EA2/7b283b59b6b8b626.jpg"],"description":"ATHENA Big Bore Cylinder Kit Ø 83 mm, 290 cc - P400485100026. This kit features a high-quality aluminum cylinder with increased bore, a complete piston with pin and rings, and all necessary gaskets. The cylinder is coated with motor-nicksil, a nickel-silicon coating developed by Athena for smoothness and wear resistance. The kit is designed to withstand high temperatures, pressures, and stresses, and can be installed without engine crankcase modifications. Technical features: Bore Diameter 83.00 mm, Compression Ratio 12.5:1, Displacement 290 cc, Net Weight 1.70 Kg.","descriptionMarkdown":"### Athena Big Bore Cylinder Kit - 290cc - 83mm Bore\n\n Enhance your motorcycle's performance with the Athena Big Bore Cylinder Kit. This kit is designed to increase engine displacement and power output while maintaining the reliability of original components. Engineered and manufactured in Italy, Athena utilizes cutting-edge technology and extensive research and development to produce high-quality aftermarket parts.\n\n The cylinder features a motor-nicksil coating, a proprietary nickel-silicon surface developed by Athena for superior smoothness and exceptional wear resistance. This advanced coating ensures longevity and optimal performance under demanding conditions.\n\n Athena's Big Bore Cylinder Kits are globally recognized for their performance, durability, and reliability. This kit guarantees a noticeable increase in the power curve without compromising the integrity of your engine.\n\n This comprehensive kit includes a high-quality aluminum cylinder with an increased bore, a complete piston assembly featuring the piston, piston pin, and rings, and all necessary gaskets for installation. Each component is engineered to withstand high temperatures, pressures, and stresses, validated through rigorous bench and road testing by Athena technicians.\n\n Installation of this cylinder kit can be performed without requiring modifications to the engine crankcase.\n\n**Key Features:**\n\n \n- Bore Diameter: 83.00 mm\n \n- Displacement: 290 cc\n \n- Compression Ratio: 12.5:1\n \n- Coating: Motor-nicksil for optimal wear resistance and smoothness\n \n- Included Components: Aluminum cylinder, complete piston kit (piston, pin, rings), and all required gaskets\n \n- Construction: Engineered and manufactured in Italy\n \n- Performance: Increases power output while maintaining reliability\n \n- Installation: No crankcase modifications required\n \n- Weight: 1.70 Kg\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: 1.70 Kg","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-250-08-13-athena-p400485100026-290cc-big-bore-p","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/40f74e5b2c98:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/40f74e5b2c98:1"}},"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."]}}