{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"9d41ab2f3584","name":"PISTON KIT 100MM KAWASAKI KX 450 09-18, ATHENA S4F100000190 490 CC BIG BORE","sku":"56-K147.100.PI","brand":"Athena","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":223.7,"formatted":"£223.70"},"summary":"ATHENA Forged Racing Piston Ø 99.96 mm for Athena Big Bore Cylinder - S4F100000190. Manufactured by Athena, this forged piston is produced with cutting-edge CNC machining tools, ensuring dimensional tolerances of less than 0.01 mm. Made from a special high-performance aluminum alloy with a high silicon content, it offers reliability, greater resistance, and excellent performance. Some piston skirts are treated with a molybdenum disulfide coating to reduce friction. Engineered in Italy, this piston kit includes the piston, pin, circlips, and piston rings. Rings are produced in Japan with wear-resistant coatings. Big End Pin Diameter 19x10x45 mm, Bore Diameter 99.96 mm, Compression Height 29.00 mm, Compression Ratio STD, Displacement 450 cc, Net Weight 0.37 Kg, Number Of Segments 2, Piston Pin Type Biconical, Piston Type Forged.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"100mm"},{"label":"Variant Id","value":"252907"}],"image":"https://www.oro2u.com/media/catalog/product/5/6/56-k147-100-pi.jpg","images":["https://www.oro2u.com/media/catalog/product/5/6/56-k147-100-pi.jpg"],"description":"ATHENA Forged Racing Piston Ø 99.96 mm for Athena Big Bore Cylinder - S4F100000190. Manufactured by Athena, this forged piston is produced with cutting-edge CNC machining tools, ensuring dimensional tolerances of less than 0.01 mm. Made from a special high-performance aluminum alloy with a high silicon content, it offers reliability, greater resistance, and excellent performance. Some piston skirts are treated with a molybdenum disulfide coating to reduce friction. Engineered in Italy, this piston kit includes the piston, pin, circlips, and piston rings. Rings are produced in Japan with wear-resistant coatings. Big End Pin Diameter 19x10x45 mm, Bore Diameter 99.96 mm, Compression Height 29.00 mm, Compression Ratio STD, Displacement 450 cc, Net Weight 0.37 Kg, Number Of Segments 2, Piston Pin Type Biconical, Piston Type Forged.","descriptionMarkdown":"### Athena Forged Racing Piston Kit\n\nThis Athena Forged Racing Piston kit is engineered for high-performance off-road motorcycles. Designed as a direct replacement for Athena Big Bore cylinder kits, this piston is manufactured using advanced reverse extrusion techniques and cutting-edge CNC machining to ensure precise dimensional tolerances of less than 0.01 mm.\n\nCrafted from a special high-performance aluminum alloy with a high silicon content, these pistons offer exceptional reliability, superior resistance, and enhanced performance compared to Original Equipment (OE) pistons. The smooth piston profile promotes consistent airflow and optimal flame propagation for improved combustion efficiency.\n\nSome piston skirts feature a molybdenum disulfide coating applied via screen printing. This treatment further reduces friction, boosting both performance and durability.\n\nAthena pistons are meticulously engineered in Italy by their dedicated R&D department. Each piston undergoes rigorous testing on engine dynamometer benches under progressive stress loads and is validated on the track in extreme conditions to guarantee its performance and reliability. This commitment to quality ensures that Athena pistons meet or exceed OE production standards.\n\nThis specific piston kit is designed to work seamlessly with Athena Big Bore cylinder kits and includes piston rings that minimize friction with the cylinder wall, leading to higher performance. The piston rings themselves are produced in Japan with wear-resistant coatings (PVD or chromium nitride) to increase longevity and durability. These rings are designed to conform perfectly to the cylinder liner, even under low tangential load.\n\nThe complete kit contains the piston, wrist pin, circlips, and piston rings. All components are replaceable and interchangeable for convenience.\n\nPlease note that products designed for increased displacement and power beyond standard road regulations are intended exclusively for competitive use. Athena disclaims any responsibility for improper use contrary to national regulations.\n\nGuarantee of compliance may not apply to products intended for competitive sports use or high-performance applications, unless a manufacturing defect is evident.\n\n#### Technical Specifications:\n\n- Piston Type: Forged\n\n- Bore Diameter: 99.96 mm\n\n- Compression Height: 29.00 mm\n\n- Compression Ratio: STD\n\n- Number Of Segments (Piston Rings): 2\n\n- Piston Pin Type: Biconical\n\n- Big End Pin Diameter: 19x10x45 mm\n\n- Displacement: 450 cc\n\n- Net Weight: 0.37 Kg","weightGrams":null,"fitments":[{"make":"HONDA","model":"CRF 450R","cc":null,"notes":null,"years":"2009–2016"},{"make":"KAWASAKI","model":"KX 450F","cc":null,"notes":null,"years":"2009–2018"},{"make":"SUZUKI","model":"RM-Z 450","cc":null,"notes":null,"years":"2013–2018"}],"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-kawasaki-kx-450-09-18-athena-s4f100000190-490-cc-big-bore","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/9d41ab2f3584:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/9d41ab2f3584:1"}},"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."]}}