Wiseco 4067GFX GF-Style Piston Ring Set 4.067in Bore 1.2/1.2/3.0mm File-to-Fit

The Wiseco 4067GFX is a GF-Style performance piston ring set designed for a 4.067-inch (103.302mm) bore automotive application. Sold as a single-cylinder set, this ring package is engineered for high-performance and race-built engines that demand precise ring sealing and consistent results.

Ring Construction:

• Top Ring: 1.2mm chrome-plated, barrel-faced steel for superior wear resistance and cylinder sealing
• Second Ring: 1.2mm taper-faced ductile iron Napier-style ring for effective oil scraping and compression backup
• Oil Control Ring: 3.0mm 3-piece assembly with a stainless steel spacer and chrome-plated rails for precise oil management

Key Features:

• File-to-fit design allows builders to achieve an exact ring end gap tailored to their specific application
• Chrome plating on top ring and oil rails provides long-lasting durability under high heat and pressure
• Ductile iron second ring offers reliable compression support and oil control
• Sold per cylinder — order one set per piston

Wiseco has been a trusted name in performance engine components for over 80 years, supplying top engine builders and racers across motorsports with precision-manufactured parts. The 4067GFX ring set is a shelf-stock item designed to pair with Wiseco forged pistons or compatible aftermarket pistons in the same bore size.