{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"90a31476ae22","name":"BIG BORE CYLINDER FULL KIT 102mm, ATHENA P400485100092 490cc BIG BORE, YAMAHA YZ 450F 20-22","sku":"56-K251_102.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 Ø 102 mm, 496 cc - P400485100092. This kit includes a high-quality aluminum cylinder with an 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. Athena's Big Bore Cylinder Kits guarantee an increase in performance while maintaining the reliability of original components. This cylinder kit can be installed without modifications to the engine crankcase. Technical features include a bore diameter of 102.00 mm, a compression ratio of 13.4:1, and a displacement of 496 cc. Manufactured by Athena.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Cylinder Kits"},{"label":"Variant Id","value":"310570"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K251_5F102_2EKIT/3f6f690010a132ee.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K251_5F102_2EKIT/3f6f690010a132ee.jpg"],"description":"ATHENA Big Bore Cylinder Kit Ø 102 mm, 496 cc - P400485100092. This kit includes a high-quality aluminum cylinder with an 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. Athena's Big Bore Cylinder Kits guarantee an increase in performance while maintaining the reliability of original components. This cylinder kit can be installed without modifications to the engine crankcase. Technical features include a bore diameter of 102.00 mm, a compression ratio of 13.4:1, and a displacement of 496 cc. Manufactured by Athena.","descriptionMarkdown":"### Athena Big Bore Cylinder Kit 102mm 496cc\n\nUpgrade your motorcycle's performance with the Athena Big Bore Cylinder Kit. This kit is engineered for increased power output while maintaining the reliability of your original components. Athena's extensive experience in aftermarket parts ensures high-quality construction and performance gains.\n\n#### Key Features:\n\n \n- Increased Displacement: Boosts your engine's capacity to 496cc for significant power enhancement.\n \n- Precision Engineering: All components are designed and tested in Italy by Athena's expert R&D department.\n \n- Durable Coating: Features a Motor-Nicksil coating, a nickel-silicon blend developed by Athena for exceptional smoothness and wear resistance.\n \n- Complete Kit: Includes a high-quality aluminum cylinder with an increased bore, a full piston assembly with pin and rings, and all necessary gaskets for installation.\n \n- Reliable Performance: Designed to withstand high temperatures, pressures, and stresses, validated through rigorous testing.\n \n- No Crankcase Modification: Installs without the need for alterations to the engine crankcase.\n\n#### Technical Specifications:\n\n \n- Bore Diameter: 102.00 mm\n \n- Compression Ratio: 13.4:1\n \n- Displacement: 496 cc","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/big-bore-cylinder-full-kit-102mm-athena-p400485100092-490cc-big-bore-yamaha-yz-4","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/90a31476ae22:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/90a31476ae22:1"}},"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."]}}