{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"3b91848128b1","name":"CYLINDER FULL KIT 53mm YAMAHA YZ 85 19-25, ATHENA P400485100077 105CC BIG BORE, (Piston included)","sku":"56-K238.53.CKA","brand":"Athena","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":872.26,"formatted":"£872.26"},"summary":"ATHENA Big Bore Cylinder Kit 53mm bore diameter, 105.46cc displacement, 14.0:1 compression ratio. Features a nickel-silicon coating for smoothness and wear resistance. Includes aluminum cylinder with 5 exhaust ports, cylinder head with interchangeable central dome, flat-top cast piston with two rings, special Ergal valve with nickel treatment, and all necessary gaskets. Developed to withstand high temperatures, pressures, and stresses. Net weight 2.15 Kg.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Cylinder Kits"},{"label":"Variant Id","value":"309743"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K238_2E53_2ECKA/fdc6792fe6a42e68.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K238_2E53_2ECKA/fdc6792fe6a42e68.jpg"],"description":"ATHENA Big Bore Cylinder Kit 53mm bore diameter, 105.46cc displacement, 14.0:1 compression ratio. Features a nickel-silicon coating for smoothness and wear resistance. Includes aluminum cylinder with 5 exhaust ports, cylinder head with interchangeable central dome, flat-top cast piston with two rings, special Ergal valve with nickel treatment, and all necessary gaskets. Developed to withstand high temperatures, pressures, and stresses. Net weight 2.15 Kg.","descriptionMarkdown":"### Athena 53mm Big Bore Cylinder Kit 105cc\n\nUpgrade your motorcycle's performance with the Athena Big Bore Cylinder Kit. Engineered and manufactured in Italy, this kit is designed to enhance power and reliability.\n\nThe cylinder features a 53mm bore diameter, increasing displacement to 105.46cc. Its surface is coated with Athena's proprietary Motornicksil, a nickel-silicon coating renowned for its exceptional smoothness and wear resistance. This advanced coating ensures optimal performance and longevity, even under demanding conditions.\n\nAthena's Big Bore kits are globally recognized for their superior performance, durability, and reliability. This kit provides a noticeable increase in power across the entire rev range while maintaining the same level of reliability as original components.\n\n**Key Features:**\n\n \n- Increased Bore Diameter: 53.00mm\n \n- Bore Gain: +5.5mm\n \n- Displacement: 106cc\n \n- Compression Ratio: 14.0:1\n \n- Cylinder coated with Motornicksil for enhanced smoothness and wear resistance\n \n- Cylinder designed with 5 exhaust ports\n \n- Cylinder head with interchangeable central dome\n \n- Includes a high-quality aluminum cylinder, cylinder head, flat-top cast piston with two rings, special Ergal valve with nickel treatment, and all necessary gaskets.\n\nAll components within the kit have been rigorously tested by Athena technicians on benches and during road tests to withstand extreme temperatures, pressures, and stresses. This guarantees that the kit will perform exceptionally under the most demanding riding conditions.\n\n**Important Note:** All Athena products must be used in compliance with applicable national regulations. Athena disclaims responsibility for any improper use.","weightGrams":null,"fitments":[],"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-53mm-yamaha-yz-85-19-25-athena-p400485100077-105cc-big-bore-pi","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/3b91848128b1:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/3b91848128b1:1"}},"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."]}}