MAHLE 4255MS-112 File Fit Piston Ring Set Bore Oversize - 4.250 005

The MAHLE 4255MS-112 is a premium file-fit piston ring set designed for 4.250-inch bore engines with a +.005-inch oversize. This three-piece ring set is engineered for professional engine builders who require precise ring end gap customization for optimal performance and sealing.

Specifications:

• Bore Size: 4.250 inches with +.005-inch oversize (4.255 inches)
• Top Ring: 1.0mm (metric standard thickness)
• Second Ring: 1.0mm (metric standard thickness)
• Oil Ring: 2.0mm (metric standard thickness)
• File-fit design allows custom end gap adjustment
• Premium materials for durability and heat resistance

File-Fit Design:

File-fit piston rings come with extra material on the ring ends, allowing engine builders to precisely file the end gap to exact specifications for their specific application. This ensures optimal ring seal, proper blow-by control, and maximum engine performance. MAHLE's precision manufacturing ensures consistent ring dimensions and superior cylinder wall conformity.

MAHLE is a leading OEM supplier known for producing high-quality pistons, rings, and engine components trusted by professional engine builders and performance enthusiasts worldwide. Each ring set meets strict tolerances for reliable performance in street, racing, and high-performance applications.