{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"231d302387a8","name":"CYLINDER FULL KIT 54MM YAMAHA YZ 125 05-21, ATHENA P400485100017 STD BORE, (Piston included)","sku":"56-K132.54.CKA","brand":"Athena","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":802.27,"formatted":"£802.27"},"summary":"ATHENA Standard Bore Cylinder Kit Ø 54 mm, 125 cc, includes Piston. Engineered in Italy by Athena’s R&D Department, this cylinder is coated with motor-nicksil, a nickel-silicon coating developed by Athena for smoothness and wear resistance. Athena’s cylinder kits are recognized for performance, durability, and reliability. The Standard Bore cylinder kit guarantees the same performance as original spare parts, with extreme reliability and optimal smoothness due to the lightweight aluminum cylinder, the nickel-silicon coating, and a low-friction piston design. The kit includes a high-quality aluminum cylinder with standard bore, cylinder head, complete piston with pin and rings, and all necessary gaskets. All components are developed to withstand high temperatures, pressures, and stresses, validated by Athena technicians through severe bench and road tests. This cylinder kit can be installed without engine crankcase modifications. Bore Diameter: 54.00 mm, Compression Ratio: 14.8:1, Displacement: 125 cc, Net Weight: 1.50 Kg.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Cylinder Kits"},{"label":"Variant Id","value":"252801"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K132_2E54_2ECKA/597b922932871ad0.png","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K132_2E54_2ECKA/597b922932871ad0.png"],"description":"ATHENA Standard Bore Cylinder Kit Ø 54 mm, 125 cc, includes Piston. Engineered in Italy by Athena’s R&D Department, this cylinder is coated with motor-nicksil, a nickel-silicon coating developed by Athena for smoothness and wear resistance. Athena’s cylinder kits are recognized for performance, durability, and reliability. The Standard Bore cylinder kit guarantees the same performance as original spare parts, with extreme reliability and optimal smoothness due to the lightweight aluminum cylinder, the nickel-silicon coating, and a low-friction piston design. The kit includes a high-quality aluminum cylinder with standard bore, cylinder head, complete piston with pin and rings, and all necessary gaskets. All components are developed to withstand high temperatures, pressures, and stresses, validated by Athena technicians through severe bench and road tests. This cylinder kit can be installed without engine crankcase modifications. Bore Diameter: 54.00 mm, Compression Ratio: 14.8:1, Displacement: 125 cc, Net Weight: 1.50 Kg.","descriptionMarkdown":"### Athena Standard Bore Cylinder Kit 54mm - 125cc\n\nThis Athena Standard Bore Cylinder Kit is engineered for optimal performance and reliability. Designed and developed in Italy by Athena's R&D Department, this kit features cutting-edge technology for enhanced engine function. The cylinder is coated with Athena's proprietary motor-nicksil, a nickel-silicon coating that provides exceptional smoothness and wear resistance, ensuring longevity and consistent performance.\n\nAthena cylinder kits are globally recognized for their superior performance, durability, and unwavering reliability. This Standard Bore kit is meticulously crafted to match the performance of original spare parts, offering extreme reliability and smooth operation. The lightweight aluminum cylinder, combined with the nickel-silicon coated barrel and a low-friction piston design, contributes to reduced wear and improved efficiency.\n\n**Key Features:**\n\n \n- Standard Bore Cylinder Kit\n \n- Ø 54 mm Bore Diameter\n \n- 125 cc Displacement\n \n- Entirely engineered in Italy by Athena's R&D Department\n \n- Coated with motor-nicksil for smoothness and optimal wear resistance\n \n- High-quality aluminum cylinder\n \n- Cylinder head included\n \n- Complete piston assembly with piston pin and rings\n \n- All necessary gaskets included\n \n- Designed to withstand high temperatures, pressures, and stresses\n \n- Validated through rigorous bench and road testing\n \n- Can be installed without engine crankcase modifications\n\n**Technical Specifications:**\n\n \n- Bore Diameter: 54.00 mm\n \n- Compression Ratio: 14.8:1\n \n- Displacement: 125 cc\n \n- Net Weight: 1.50 Kg","weightGrams":null,"fitments":[{"make":"YAMAHA","model":"YZ 125","cc":null,"notes":null,"years":"1997–2021"}],"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-54mm-yamaha-yz-125-05-21-athena-p400485100017-std-bore-piston-","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/231d302387a8:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/231d302387a8:1"}},"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."]}}