{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"dfcae219887b","name":"PISTON KIT B 97MM YAMAHA YZ 450F 20-22, ATHENA S5F09700005A","sku":"56-W4787.A.ATH","brand":"Athena","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":199.99,"formatted":"£199.99"},"summary":"ATHENA forged piston kit for Athena and OE cylinders. Features a 96.95 mm bore diameter, 13.7:1 compression ratio, and 449 cc displacement. Made from a special high-performance aluminum alloy with high silicon content, this piston is produced using cutting-edge CNC machining tools for dimensional tolerances of less than 0.01 mm. Some piston skirts have a molybdenum disulfide coating to reduce friction. The kit includes piston rings made in Japan with wear-resistant coatings (PVD or chromium nitride), a pin, circlips, and piston rings. All components are replaceable and interchangeable. Technical features: Big End Pin Diameter (mm) 18x10x48.8, Compression Height (mm) 24.00, Piston Pin Type Biconical, Piston Type Forged, Number Of Segments 3. Weight: 0.33 Kg.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"Variant Id","value":"310572"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock115237_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock115237_1.jpg"],"description":"ATHENA forged piston kit for Athena and OE cylinders. Features a 96.95 mm bore diameter, 13.7:1 compression ratio, and 449 cc displacement. Made from a special high-performance aluminum alloy with high silicon content, this piston is produced using cutting-edge CNC machining tools for dimensional tolerances of less than 0.01 mm. Some piston skirts have a molybdenum disulfide coating to reduce friction. The kit includes piston rings made in Japan with wear-resistant coatings (PVD or chromium nitride), a pin, circlips, and piston rings. All components are replaceable and interchangeable. Technical features: Big End Pin Diameter (mm) 18x10x48.8, Compression Height (mm) 24.00, Piston Pin Type Biconical, Piston Type Forged, Number Of Segments 3. Weight: 0.33 Kg.","descriptionMarkdown":"### Athena Forged Piston Kit - 97mm Bore\n\nEnhance your motorcycle's performance and reliability with the Athena Forged Piston Kit. Engineered for demanding off-road use, this piston kit is crafted using advanced reverse extrusion and cutting-edge CNC machining for superior dimensional accuracy, ensuring tolerances less than 0.01 mm.\n\nConstructed from a special high-performance aluminum alloy with a high silicon content, Athena pistons offer exceptional durability and performance that meets or exceeds Original Equipment (OE) standards. The piston's perfectly smooth profile promotes optimal airflow and efficient flame propagation for improved combustion. Some applications feature a molybdenum disulfide coating on the piston skirt, applied via screen printing, to further reduce friction, boost performance, and extend the lifespan of the component.\n\nEach piston is meticulously engineered in Italy by the Athena R&D department and undergoes rigorous testing on engine dynamometer benches and real-world track conditions to validate its performance even under the most extreme circumstances. This commitment to quality ensures advanced technical solutions and the highest manufacturing standards.\n\nThis piston kit includes the piston, piston pin, circlips, and piston rings. The piston rings, manufactured in Japan with wear-resistant coatings such as PVD or chromium nitride, are designed to minimize friction with the cylinder, leading to higher performance and increased durability. These rings maintain a perfect seal with the cylinder liner even at low tangential loads.\n\n**Key Features:**\n\n \n- Forged Piston Type\n \n- High-performance aluminum alloy with high silicon content\n \n- Dimensional tolerances under 0.01 mm\n \n- Smooth piston profile for improved airflow and flame propagation\n \n- Optional molybdenum disulfide coating on some skirts to reduce friction\n \n- Piston rings made in Japan with wear-resistant coatings\n \n- Kit includes: Piston, Piston Pin, Circlips, and Piston Rings\n \n- All components are replaceable and interchangeable\n\n**Technical Specifications:**\n\n \n- Bore Diameter: 96.95 mm\n \n- Compression Height: 24.00 mm\n \n- Compression Ratio: 13.7:1\n \n- Displacement: 449 cc\n \n- Number of Segments: 3\n \n- Piston Pin Type: Biconical\n \n- Big End Pin Diameter: 18x10x48.8 mm\n \n- Net Weight: 0.33 Kg","weightGrams":null,"fitments":[{"make":"FANTIC","model":"XEF 450","cc":null,"notes":null,"years":"2022–2024"},{"make":"FANTIC","model":"XXF 450","cc":null,"notes":null,"years":"2022"},{"make":"YAMAHA","model":"WR 450F","cc":null,"notes":null,"years":"2021–2023"},{"make":"YAMAHA","model":"YZ 450F","cc":null,"notes":null,"years":"2020–2022"},{"make":"YAMAHA","model":"YZ 450FX","cc":null,"notes":null,"years":"2021–2023"}],"collections":[{"name":"Engine","url":"https://www.2brosparts.com/api/agent/collection/GB/engine"},{"name":"Pistons & Kits","url":"https://www.2brosparts.com/api/agent/collection/GB/pistons-kits"}],"links":{"page":"https://www.2brosparts.com/products/piston-kit-b-97mm-yamaha-yz-450f-20-22-athena-s5f09700005a","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/dfcae219887b:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/dfcae219887b: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."]}}