{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"753e1899a1bf","name":"PISTON KIT 100MM KAWASAKI KFX 450 08-14, ATHENA S4F100000160 FOR 490CC BIG BORE","sku":"56-K126.100.PI","brand":"Athena","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":217.82,"formatted":"£217.82"},"summary":"Athena Forged Racing Piston Ø 99.95 mm for Athena Big Bore Cylinder - S4F100000160. Athena offers a wide range of 2-stroke and 4-stroke off-road forged pistons made by reverse extrusion. Produced with cutting-edge CNC machining tools, which ensure dimensional tolerances of less than 0.01 mm, Athena pistons are made of a special high-performance aluminum alloy with high silicon content that guarantee the same reliability of the OE piston, while at the same time providing greater resistance and excellent performance. The perfectly smooth profile ensures a regular flow and the perfect flame propagation. Some pistons skirts are treated with a molybdenum disulfide coating applied by screen printing which further reduce friction to enhance performance and durability. Athena engineers ensure advanced technical solutions and the highest quality standards equal to or better than those adopted in OE production, so as to guarantee performance and reliability. Each piston, engineered in Italy by Athena R&D department, is tested on engine dynamometer benches under progressive stress load, and thereafter on track to validate its performance even in the most extreme conditions. This piston for Athena Big Bore cylinder kit is equipped with piston rings that guarantee less friction with the cylinder and therefore a higher performance. The rings are produced in Japan with wear-resistant coatings (PVD or chromium nitride) to increase the retain and the durability. The rings perfectly adapt to the cylinder liner even at low tangential load. This piston kit contains the piston, the pin, the circlips, and the piston rings. All components are replaceable and interchangeable in case of need. Big End Pin Diameter (mm): 21x13x51. Bore Diameter (mm): 99.95. Compression Height (mm): 29.00. Compression Ratio: 13.0:1. Displacement (cc): 450. Net Weight (Kg): 0.45. Number Of Segments: 3. Piston Pin Type: Standard. Piston Type: Forged.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"Variant Id","value":"252753"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock51693_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock51693_1.jpg"],"description":"Athena Forged Racing Piston Ø 99.95 mm for Athena Big Bore Cylinder - S4F100000160. Athena offers a wide range of 2-stroke and 4-stroke off-road forged pistons made by reverse extrusion. Produced with cutting-edge CNC machining tools, which ensure dimensional tolerances of less than 0.01 mm, Athena pistons are made of a special high-performance aluminum alloy with high silicon content that guarantee the same reliability of the OE piston, while at the same time providing greater resistance and excellent performance. The perfectly smooth profile ensures a regular flow and the perfect flame propagation. Some pistons skirts are treated with a molybdenum disulfide coating applied by screen printing which further reduce friction to enhance performance and durability. Athena engineers ensure advanced technical solutions and the highest quality standards equal to or better than those adopted in OE production, so as to guarantee performance and reliability. Each piston, engineered in Italy by Athena R&D department, is tested on engine dynamometer benches under progressive stress load, and thereafter on track to validate its performance even in the most extreme conditions. This piston for Athena Big Bore cylinder kit is equipped with piston rings that guarantee less friction with the cylinder and therefore a higher performance. The rings are produced in Japan with wear-resistant coatings (PVD or chromium nitride) to increase the retain and the durability. The rings perfectly adapt to the cylinder liner even at low tangential load. This piston kit contains the piston, the pin, the circlips, and the piston rings. All components are replaceable and interchangeable in case of need. Big End Pin Diameter (mm): 21x13x51. Bore Diameter (mm): 99.95. Compression Height (mm): 29.00. Compression Ratio: 13.0:1. Displacement (cc): 450. Net Weight (Kg): 0.45. Number Of Segments: 3. Piston Pin Type: Standard. Piston Type: Forged.","descriptionMarkdown":"### Athena Forged Racing Piston Kit - 100mm Bore\n\n This Athena forged racing piston kit is engineered for enhanced performance and durability. Crafted with advanced CNC machining for precise tolerances, this piston utilizes a special high-performance aluminum alloy with a high silicon content. This ensures reliability comparable to original equipment while offering superior resistance and excellent performance characteristics.\n\n The piston's smooth profile promotes regular flow and perfect flame propagation. Some piston skirts are treated with a molybdenum disulfide coating, applied via screen printing, to further reduce friction, boosting performance and longevity.\n\n This piston kit is designed for Athena Big Bore cylinder kits and includes piston rings that minimize friction with the cylinder for higher performance. The piston rings are produced in Japan with wear-resistant coatings (PVD or chromium nitride) for increased retention and durability, ensuring a perfect fit to the cylinder liner even at low tangential loads.\n\n**Key Features:**\n\n \n- Piston Type: Forged\n \n- Bore Diameter: 99.95 mm\n \n- Compression Height: 29.00 mm\n \n- Compression Ratio: 13.0:1\n \n- Number Of Segments: 3\n \n- Piston Pin Type: Standard\n \n- Big End Pin Diameter: 21x13x51 mm\n \n- Displacement: 450 cc (for Big Bore applications)\n \n- Material: Special high-performance aluminum alloy with high silicon content\n \n- Coating: Molybdenum disulfide coating on some skirts for reduced friction\n \n- Included Components: Piston, pin, circlips, and piston rings\n \n- Origin: Engineered in Italy by Athena R&D\n \n- Ring Manufacturing: Produced in Japan with wear-resistant coatings\n\n **Note:** Products designed for displacements and power exceeding road code regulations are intended exclusively for competitive use.","weightGrams":null,"fitments":[{"make":"KAWASAKI","model":"KFX 450R","cc":null,"notes":null,"years":"2008–2014"},{"make":"KAWASAKI","model":"KFX R 450","cc":null,"notes":null,"years":"2008–2014"}],"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-kfx-450-08-14-athena-s4f100000160-for-490cc-big-bore","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/753e1899a1bf:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/753e1899a1bf: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."]}}