{"product_id":"athena-54-mm-cylinder-kit-for-yamaha-yz125-p400485100008","title":"Athena 54 mm Cylinder Kit for Yamaha YZ125, P400485100008","description":"\u003cp\u003eUpgrade the top-end performance of your Yamaha two-stroke motorcycle with the Athena 54 mm Cylinder Kit. Designed for a 14.8:1 compression ratio, this kit is engineered to support strong power delivery and dependable operation when properly installed and tuned. Athena is a trusted manufacturer of motorcycle engine components, and this kit is built to meet the demands of motocross and performance riding.\u003c\/p\u003e\u003cp\u003eThe kit is designed to fit 2001, 2002, 2003, and 2004 Yamaha YZ125 models. It provides a direct-fit cylinder solution for compatible applications and is intended for use with the original engine configuration unless otherwise specified by the manufacturer. Verify model year, engine specifications, and required supporting components before installation.\u003c\/p\u003e\u003cp\u003eManufacturer part number P400485100008 and vendor part number P400485100008 identify this Athena cylinder kit. Professional installation is recommended, including inspection of related top-end components and precise adherence to Yamaha and Athena installation procedures. Proper break-in, jetting, fuel selection, and maintenance are essential for reliable performance and service life.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: Athena\u003c\/li\u003e\n\u003cli\u003eManufacturer: Athena\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: P400485100008\u003c\/li\u003e\n\u003cli\u003eVendor Part Number: P400485100008\u003c\/li\u003e\n\u003cli\u003eCylinder Size: 54 mm\u003c\/li\u003e\n\u003cli\u003eCompression Ratio: 14.8:1\u003c\/li\u003e\n\u003cli\u003eApplication: Yamaha YZ125\u003c\/li\u003e\n\u003cli\u003eFitment: 2001 Yamaha YZ125\u003c\/li\u003e\n\u003cli\u003eFitment: 2002 Yamaha YZ125\u003c\/li\u003e\n\u003cli\u003eFitment: 2003 Yamaha YZ125\u003c\/li\u003e\n\u003cli\u003eFitment: 2004 Yamaha YZ125\u003c\/li\u003e\n\u003cli\u003eProduct Type: Cylinder kit\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n2001 Yamaha YZ125\u003cbr\u003e\n2002 Yamaha YZ125\u003cbr\u003e\n2003 Yamaha YZ125\u003cbr\u003e\n2004 Yamaha YZ125","brand":"ATHENA","offers":[{"title":"Default Title","offer_id":67549852631275,"sku":"68-4870","price":893.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/3b93-572a805d59dc8.jpg?v=1790696743","url":"https:\/\/ctracingservices.com\/products\/athena-54-mm-cylinder-kit-for-yamaha-yz125-p400485100008","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}