Kawasaki KX250F Piston Set - Wiseco - `04-`05. A direct-replacement forged piston kit designed for the 2004–2005 KX250F four-stroke, built to Wiseco's application-specific standards for reliable service life and consistent fit.

This Wiseco kit is engineered for the KX250F engine and produced from dedicated forgings in Mentor, Ohio. The piston is machined to tight tolerances for predictable ring fit and bore contact. The forging material and design target improved tensile strength compared with cast alternatives, helping resist wear and maintain geometry under typical trail and race conditions. The kit includes piston rings, wrist pin(s), and circlips for straightforward installation and rebuilds. Specified for standard bore: 77.00 mm with a 14.1:1 compression ratio.

Features

• Application-specific forged piston for Kawasaki KX250F 2004–2005
• Includes rings, wrist pin(s), and circlips for complete piston installation
• Forged and machined in Mentor, OH to tight tolerances
• Standard bore 77.00 mm, 14.1:1 compression ratio

This piston set is appropriate for riders and tuners who need a factory-fit forged replacement or are preparing an engine refresh. It’s a straightforward option for maintaining engine durability and dimensional accuracy when restoring compression and ring sealing. No additional engine modifications are implied; verify bore and clearances match your machine before ordering.

If you have questions or want help confirming fitment, call us directly. We have two service locations offering installation and customization: Austin, Texas and the Los Angeles, California area. Call 512-982-9393 (TX) or 562-981-6800 (CA). If you are thinking about purchasing multiple items, contact us for possible shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov