Kawasaki KLX/KFX400 Piston Set - Wiseco - Forged Series, 92.00 mm Bore - `03-`06. This Wiseco Forged Series piston kit is built for riders who want a durable, race-capable replacement for their KLX/KFX400 (2003–2006) 4-stroke engines. It provides a complete kit for straightforward installation.

Machined from forged material, these pistons are engineered to withstand high stress and repeated use while maintaining dimensional stability. The kit includes the piston, wrist pin, rings, and circlips so you have the components needed to install or rebuild without sourcing extra parts. Designed for a variety of 4-stroke applications, the Forged Series balances strength and service life while supporting reliable performance for trail, track, or street use.

Features

• 92.00 mm bore sized to fit KLX/KFX400 (2003–2006)
• Forged construction for improved durability under load
• Complete kit: piston, wrist pin, rings, circlips included
• Designed for 4-stroke applications including ATVs and dirt bikes

If you have questions or need help confirming fitment, call us directly — we’re happy to assist. We have two locations offering installation and customization services: Austin, Texas and the Los Angeles, California area. Call 512-982-9393 (TX) or 562-981-6800 (CA) to speak with our technicians and schedule service.

Thinking about buying 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