{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"f30f9f2fed86","name":"PISTON KIT 100MM HONDA CRF 450 02-08, ATHENA S4F10000007A BIG BORE","sku":"56-K101.100.PIA","brand":"Athena","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":8,"price":{"amount":223.7,"formatted":"£223.70"},"summary":"Forged racing piston with a 99.95 mm bore diameter for Athena Big Bore cylinders. Manufactured using advanced CNC machining tools from a special high-performance aluminum alloy with high silicon content, ensuring dimensional tolerances of less than 0.01 mm. Some piston skirts feature a molybdenum disulfide coating applied by screen printing to reduce friction, enhance performance, and improve durability. The piston rings, produced in Japan with wear-resistant coatings (PVD or chromium nitride), offer increased retention and durability, adapting perfectly to the cylinder liner even at low tangential load. This kit includes the piston, pin, circlips, and piston rings. Technical specifications: Big End Pin Diameter 19x12x51 mm, Compression Height 29.00 mm, Compression Ratio 11.6:1, Displacement 450 cc, Net Weight 0.39 Kg, Number Of Segments 2, Piston Pin Type Biconical, Piston Type Forged. Partner Cross Reference code: SPARE RINGS S41316062. For competitive use only.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"100mm"},{"label":"Variant Id","value":"252580"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K101_2E100_2EPIA/07ef33a63f31e905.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K101_2E100_2EPIA/07ef33a63f31e905.jpg"],"description":"Forged racing piston with a 99.95 mm bore diameter for Athena Big Bore cylinders. Manufactured using advanced CNC machining tools from a special high-performance aluminum alloy with high silicon content, ensuring dimensional tolerances of less than 0.01 mm. Some piston skirts feature a molybdenum disulfide coating applied by screen printing to reduce friction, enhance performance, and improve durability. The piston rings, produced in Japan with wear-resistant coatings (PVD or chromium nitride), offer increased retention and durability, adapting perfectly to the cylinder liner even at low tangential load. This kit includes the piston, pin, circlips, and piston rings. Technical specifications: Big End Pin Diameter 19x12x51 mm, Compression Height 29.00 mm, Compression Ratio 11.6:1, Displacement 450 cc, Net Weight 0.39 Kg, Number Of Segments 2, Piston Pin Type Biconical, Piston Type Forged. Partner Cross Reference code: SPARE RINGS S41316062. For competitive use only.","descriptionMarkdown":"### Athena Forged Big Bore Piston Kit\n\nEnhance the performance and reliability of your motorcycle with this Athena Forged Big Bore Piston Kit. Engineered in Italy by Athena's R&D department, this piston kit is designed for superior strength and durability.\n\nCrafted from a special high-performance aluminum alloy with a high silicon content, Athena pistons offer excellent resistance and performance, rivaling OE specifications. The kit features advanced technical solutions and adheres to the highest quality standards.\n\nThe piston's smooth profile ensures optimal airflow and perfect flame propagation. Some piston skirts are treated with a molybdenum disulfide coating, applied by screen printing, to further reduce friction, boosting performance and extending lifespan.\n\nThis piston kit is specifically designed for Athena Big Bore cylinder kits and includes high-quality piston rings produced in Japan with wear-resistant coatings (PVD or chromium nitride) for increased durability and longevity. The rings perfectly conform to the cylinder liner, even under low tangential load, ensuring reduced friction and higher performance.\n\n**Key Features:**\n\n \n- Forged Piston Type\n \n- Manufactured using cutting-edge CNC machining tools for precise dimensional tolerances (less than 0.01 mm).\n \n- Special high-performance aluminum alloy with high silicon content for enhanced reliability and resistance.\n \n- Molybdenum disulfide coating on some piston skirts reduces friction and improves durability.\n \n- Piston rings made in Japan with wear-resistant coatings for increased lifespan.\n \n- Kit includes piston, pin, circlips, and piston rings. All components are replaceable and interchangeable.\n \n- Engineered and tested on engine dynamometer benches and on track for validation under extreme conditions.\n \n- Designed to provide greater displacement and power.\n\n**Technical Specifications:**\n\n \n- Bore Diameter: 99.95 mm\n \n- Piston Type: Forged\n \n- Number Of Segments: 2\n \n- Piston Pin Type: Biconical\n \n- Big End Pin Diameter: 19x12x51 mm\n \n- Compression Height: 29.00 mm\n \n- Compression Ratio: 11.6:1\n \n- Displacement: 450 cc\n \n- Net Weight: 0.39 Kg\n\n**Note:** Products produced for greater displacement and power than those provided by road codes are intended exclusively for competitive use. Athena disclaims all responsibility for any use of the product contrary to national regulations.","weightGrams":null,"fitments":[{"make":"HM MOTO","model":"CRE MOTARD ALL","cc":null,"notes":null,"years":"2002–2010"},{"make":"HONDA","model":"CRE F R 450","cc":null,"notes":null,"years":"2005–2007"},{"make":"HONDA","model":"CRE MOTARD 450","cc":null,"notes":null,"years":"2002–2010"},{"make":"HONDA","model":"CRF 450R","cc":null,"notes":null,"years":"2002–2008"},{"make":"HONDA","model":"CRF 450X","cc":null,"notes":null,"years":"2005–2014"},{"make":"HONDA","model":"CRM F R 450","cc":null,"notes":null,"years":"2005–2007"},{"make":"HONDA","model":"CRM G 450","cc":null,"notes":null,"years":"2005–2009"},{"make":"HONDA","model":"TRX 450ER","cc":null,"notes":null,"years":"2006–2014"},{"make":"HONDA","model":"TRX 450R","cc":null,"notes":null,"years":"2006–2014"},{"make":"HONDA","model":"TRX ER 450","cc":null,"notes":null,"years":"2006–2014"},{"make":"HONDA","model":"TRX R 450","cc":null,"notes":null,"years":"2006–2014"},{"make":"HONDA","model":"XR 400","cc":null,"notes":null,"years":"1996–2004"},{"make":"KAWASAKI","model":"KLX 400","cc":null,"notes":null,"years":"2003–2006"}],"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-100mm-honda-crf-450-02-08-athena-s4f10000007a-big-bore","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/f30f9f2fed86:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/f30f9f2fed86:1"}},"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. 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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."]}}