{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"a0c12d0fcd52","name":"CYLINDER FULL KIT 53MM YAMAHA YZ 85 02-18, ATHENA P400485100039 112CC BIG BORE, (Piston and crankshaft included)","sku":"56-K183.53.BBLS","brand":"Athena","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":699.46,"formatted":"£699.46"},"summary":"ATHENA Big Bore Cylinder Kit Ø 53 mm, 112 cc with Cylinder Head and Crankshaft included. Bore Diameter 53.00 mm. Compression Ratio 13.8:1. Displacement 112 cc. Net Weight 3.30 Kg. The kit includes the aluminum cylinder with increased bore, the complete piston with the piston pin and rings, crankshaft, and all necessary gaskets. The cylinder is coated with motor-nicksil, a nickel-silicon coating developed by Athena. This cylinder kit can be installed without making any changes to the engine crankcase. Athena products must be used in compliance with the specific national regulations of the member state where it is being marketed or sold. Athena declines all responsibility for any improper use. Part No. 56-K183.53.BBLS.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Cylinder Kits"},{"label":"General Size","value":"85mm"},{"label":"Variant Id","value":"253094"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K183_2E53_2EBBLS/b2bae9ac60da5ce2.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K183_2E53_2EBBLS/b2bae9ac60da5ce2.jpg"],"description":"ATHENA Big Bore Cylinder Kit Ø 53 mm, 112 cc with Cylinder Head and Crankshaft included. Bore Diameter 53.00 mm. Compression Ratio 13.8:1. Displacement 112 cc. Net Weight 3.30 Kg. The kit includes the aluminum cylinder with increased bore, the complete piston with the piston pin and rings, crankshaft, and all necessary gaskets. The cylinder is coated with motor-nicksil, a nickel-silicon coating developed by Athena. This cylinder kit can be installed without making any changes to the engine crankcase. Athena products must be used in compliance with the specific national regulations of the member state where it is being marketed or sold. Athena declines all responsibility for any improper use. Part No. 56-K183.53.BBLS.","descriptionMarkdown":"### Athena 112cc Big Bore Cylinder Kit - 53mm Bore\n\n Upgrade your motorcycle's performance with the Athena Big Bore Cylinder Kit. This comprehensive kit features a 53mm bore diameter, increasing displacement to 112cc for noticeable gains in power and performance across the entire RPM range. Athena's commitment to quality is evident in every component, engineered and tested in Italy for optimal performance, durability, and reliability.\n\n The cylinder is coated with Athena's proprietary motor-nicksil, a nickel-silicon coating designed for superior smoothness and wear resistance, ensuring a long service life. This kit is designed to maintain the reliability of original components while delivering enhanced power.\n\n This kit includes a high-quality aluminum cylinder with an increased bore, a complete piston assembly with pin and rings, a crankshaft, and all necessary gaskets. All parts are manufactured to withstand extreme temperatures, pressures, and stresses, validated through rigorous bench and road testing. The Big Bore Cylinder Kit can be installed without requiring any modifications to the engine crankcase.\n\n **Key Features:**\n\n \n- Increased Displacement: 112cc\n \n- Bore Diameter: 53.00 mm\n \n- Cylinder Coating: Motor-nicksil (Nickel-Silicon) for enhanced durability and smoothness\n \n- Includes: High-quality aluminum cylinder, complete piston kit, crankshaft, and all necessary gaskets\n \n- Performance Enhancement: Guarantees an observable increase in power output\n \n- Reliability: Engineered to maintain original component reliability\n \n- Direct Fit: Installs without engine crankcase modifications\n \n- Developed and Tested: Engineered in Italy by Athena's R&D department\n\n **Technical Specifications:**\n\n \n- Bore Diameter: 53.00 mm\n \n- Compression Ratio: 13.8:1\n \n- Displacement: 112 cc\n \n- Net Weight: 3.30 Kg","weightGrams":null,"fitments":[{"make":"YAMAHA","model":"YZ 85","cc":null,"notes":null,"years":"2002–2019"}],"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-85-02-18-athena-p400485100039-112cc-big-bore-pi","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/a0c12d0fcd52:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/a0c12d0fcd52:1"}},"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."]}}