{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"8a429497e2cf","name":"PISTON KIT 100MM SUZUKI RM-Z 450 08-12, ATHENA S4F100000170 490CC BIG BORE","sku":"56-K131.100_PI","brand":"Athena","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":217.82,"formatted":"£217.82"},"summary":"ATHENA Forged Racing Piston Ø 99.95 mm for Athena Big Bore Cylinder - S4F100000170. This piston is made from a special high-performance aluminum alloy with high silicon content, produced with cutting-edge CNC machining tools ensuring dimensional tolerances of less than 0.01 mm. Some pistons have a molybdenum disulfide coating on the skirts to reduce friction. The piston rings are produced in Japan with wear-resistant coatings (PVD or chromium nitride) to increase durability. This piston kit contains the piston, pin, circlips, and piston rings. Big End Pin Diameter: 19x10x45 mm. Bore Diameter: 99.95 mm. Compression Height: 29.00 mm. Compression Ratio: 12.2:1. Displacement: 450 cc. Net Weight: 0.39 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":"Variant Id","value":"252798"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K131_2E100_5FPI/65b71ea4ff203492.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K131_2E100_5FPI/65b71ea4ff203492.jpg"],"description":"ATHENA Forged Racing Piston Ø 99.95 mm for Athena Big Bore Cylinder - S4F100000170. This piston is made from a special high-performance aluminum alloy with high silicon content, produced with cutting-edge CNC machining tools ensuring dimensional tolerances of less than 0.01 mm. Some pistons have a molybdenum disulfide coating on the skirts to reduce friction. The piston rings are produced in Japan with wear-resistant coatings (PVD or chromium nitride) to increase durability. This piston kit contains the piston, pin, circlips, and piston rings. Big End Pin Diameter: 19x10x45 mm. Bore Diameter: 99.95 mm. Compression Height: 29.00 mm. Compression Ratio: 12.2:1. Displacement: 450 cc. Net Weight: 0.39 Kg. Number Of Segments: 2. Piston Pin Type: Biconical. Piston Type: Forged.","descriptionMarkdown":"### Athena Forged Piston Kit - Big Bore Upgrade\n\n Enhance your motorcycle's performance with this high-quality Athena forged piston kit. Designed for use with Athena Big Bore cylinder kits, this piston is engineered for superior power and reliability. Athena is a leading manufacturer of motorcycle spare parts with over 40 years of experience, dedicated to providing cutting-edge components for off-road riders.\n\n This piston is crafted using advanced CNC machining tools to ensure exceptional dimensional accuracy, with tolerances less than 0.01 mm. It's made from a special high-performance aluminum alloy rich in silicon, offering the reliability of original equipment (OE) pistons while providing increased resistance and outstanding performance. The smooth piston profile promotes efficient airflow and optimal flame propagation.\n\n Some piston skirts feature a molybdenum disulfide coating, applied through screen printing, to further reduce friction, boost performance, and extend durability. Athena engineers prioritize advanced technical solutions and the highest quality standards, meeting or exceeding OE production specifications for guaranteed performance and dependability.\n\n Each piston is meticulously developed and tested by Athena's R&D department in Italy, undergoing rigorous dynamometer testing and track validation in extreme conditions. This piston kit includes the piston, pin, circlips, and piston rings, all of which are replaceable and interchangeable. The included piston rings, manufactured in Japan with wear-resistant coatings (PVD or chromium nitride), minimize friction with the cylinder, leading to higher performance and increased durability. These rings are designed for excellent adaptability to the cylinder liner, even under low tangential load.\n\n### Key Features:\n\n \n- Forged piston construction for superior strength and performance.\n \n- Special high-performance aluminum alloy with high silicon content.\n \n- Precision CNC machining for tight tolerances (<0.01 mm).\n \n- Optimized piston profile for improved airflow and combustion.\n \n- Optional molybdenum disulfide coating on some skirts to reduce friction.\n \n- High-quality piston rings manufactured in Japan with wear-resistant coatings.\n \n- Kit includes piston, pin, circlips, and piston rings.\n \n- Engineered and tested in Italy for performance and reliability.\n\n### Technical Specifications:\n\n \n- Piston Type: Forged\n \n- Bore Diameter: 99.95 mm\n \n- Compression Height: 29.00 mm\n \n- Compression Ratio: 12.2:1\n \n- Number Of Segments: 2\n \n- Piston Pin Type: Biconical\n \n- Big End Pin Diameter: 19x10x45 mm\n \n- Displacement: 450 cc\n \n- Net Weight: 0.39 Kg\n\n_Note: Products designed for increased displacement and power beyond legal road limits are intended exclusively for competitive use. Athena disclaims responsibility for any use contrary to national regulations._","weightGrams":null,"fitments":[{"make":"HONDA","model":"CRE F R 450","cc":null,"notes":null,"years":"2005–2007"},{"make":"HONDA","model":"CRE F X 450","cc":null,"notes":null,"years":"2005–2009"},{"make":"HONDA","model":"CRE MOTARD 450","cc":null,"notes":null,"years":"2002–2010"},{"make":"HONDA","model":"CRE X IE 450","cc":null,"notes":null,"years":"2007–2008"},{"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 F X 450","cc":null,"notes":null,"years":"2005–2009"},{"make":"HONDA","model":"CRM X IE 450","cc":null,"notes":null,"years":"2007–2008"},{"make":"HONDA","model":"CRMF CREF X 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 R 450","cc":null,"notes":null,"years":"2006–2014"},{"make":"HUSABERG","model":"FE E 650","cc":null,"notes":null,"years":"1999–2005"},{"make":"HUSABERG","model":"FS E C 650","cc":null,"notes":null,"years":"1999–2005"},{"make":"KAWASAKI","model":"KLX 450R","cc":null,"notes":null,"years":"2008–2017"},{"make":"KAWASAKI","model":"KX 450F","cc":null,"notes":null,"years":"2005–2008"},{"make":"SUZUKI","model":"RM-Z 450","cc":null,"notes":null,"years":"2005–2006, 2008–2018"}],"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-suzuki-rm-z-450-08-12-athena-s4f100000170-490cc-big-bore","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/8a429497e2cf:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/8a429497e2cf: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."]}}