{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"18ca6ea5c829","name":"CYLINDER FULL KIT 100mm 2009-2015 KAWASAKI KX 450 ATHENA P400250100015 490CC BIG BORE (Piston included)","sku":"56-K147.100.KIT","brand":"Athena","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":684,"formatted":"£684.00"},"summary":"A big bore cylinder kit with a 100 mm bore and 490 cc displacement engineered to increase performance across the power curve while maintaining reliability comparable to original components. Developed and tested in Italy, it features a lightweight aluminium cylinder with a nickel-silicon coated bore and a complete piston package. Supplied with piston, pin, rings and all required gaskets. Installable without modifications to the engine crankcase. The aluminium cylinder has a nickel-silicon coating for smoothness and wear resistance. Developed to increase performance while retaining original-level reliability. Complete kit includes piston, piston pin, piston rings and gaskets. Components validated through bench and road testing. Designed to withstand high temperatures, pressures and stresses. Bore diameter is 100.00 mm and bore gain is +4 mm. Displacement is 490 cc. Compression ratio is 12.0:1. Contents: Aluminium cylinder, piston, piston pin, piston rings, gaskets. Manufacturer: Athena.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Cylinder Kits"},{"label":"General Size","value":"100mm"},{"label":"Variant Id","value":"252906"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K147_2E100_2EKIT/fb23bb5694988261.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K147_2E100_2EKIT/fb23bb5694988261.jpg"],"description":"A big bore cylinder kit with a 100 mm bore and 490 cc displacement engineered to increase performance across the power curve while maintaining reliability comparable to original components. Developed and tested in Italy, it features a lightweight aluminium cylinder with a nickel-silicon coated bore and a complete piston package. Supplied with piston, pin, rings and all required gaskets. Installable without modifications to the engine crankcase. The aluminium cylinder has a nickel-silicon coating for smoothness and wear resistance. Developed to increase performance while retaining original-level reliability. Complete kit includes piston, piston pin, piston rings and gaskets. Components validated through bench and road testing. Designed to withstand high temperatures, pressures and stresses. Bore diameter is 100.00 mm and bore gain is +4 mm. Displacement is 490 cc. Compression ratio is 12.0:1. Contents: Aluminium cylinder, piston, piston pin, piston rings, gaskets. Manufacturer: Athena.","descriptionMarkdown":"### Athena 490cc Big Bore Cylinder Kit for Kawasaki KX450\n\nEnhance the performance of your motorcycle with the Athena 490cc Big Bore Cylinder Kit. This comprehensive kit is engineered to boost power across the entire RPM range while maintaining reliability comparable to original factory components. Developed and rigorously tested in Italy, this kit features a lightweight aluminum cylinder with a smooth and durable nickel-silicon coated bore.\n\n**Key Features:**\n\n \n- Increased Displacement: A bore diameter of 100.00 mm results in a significant increase in displacement to 490 cc for a substantial power upgrade.\n \n- Nickel-Silicon Coating: The cylinder bore features a nickel-silicon coating, also known as motor-nicksil, providing exceptional smoothness and superior wear resistance for extended engine life.\n \n- Performance Focused: Designed to deliver increased performance without compromising the reliability expected from original parts.\n \n- Complete Kit: This kit includes everything needed for installation: a high-quality aluminum cylinder, piston, piston pin, piston rings, and all necessary gaskets.\n \n- Proven Durability: Components have undergone extensive validation through both dynamometer and real-world road testing to ensure they can withstand demanding conditions.\n \n- Engineered for Strength: Built to effectively manage high temperatures, pressures, and stresses encountered during operation.\n \n- Hassle-Free Installation: The kit is designed for direct installation without requiring any modifications to the engine crankcase.\n \n- Optimal Compression: Features a compression ratio of 12.0:1 for efficient combustion and power delivery.\n\n**Specifications:**\n\n \n- Bore Diameter: 100.00 mm\n \n- Bore Gain: +4 mm\n \n- Engine Displacement: 490 cc\n \n- Compression Ratio: 12.0:1\n \n- Contents: Aluminum Cylinder, Piston, Piston Pin, Piston Rings, Gaskets\n\n**Note:** Usage of this part must comply with all applicable national regulations.","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":"Cylinder Kits","url":"https://www.2brosparts.com/api/agent/collection/GB/cylinder-kits"}],"links":{"page":"https://www.2brosparts.com/products/cylinder-full-kit-100mm-2009-2015-kawasaki-kx-450-athena-p400250100015-490cc-big","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/18ca6ea5c829:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/18ca6ea5c829:1"}},"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."]}}