MAHLE 3030947B Chrome Piston Ring Set Bore Performance Oil Ring Assembly - 4.260 CP20

The MAHLE 3030947B Chrome Piston Ring Set is a high-performance ring assembly engineered for 4.260-inch bore applications. This precision-manufactured ring set features a 2.0mm x .113-inch radial width low-tension design optimized for reduced friction and improved power output in demanding performance engines.

Key Features:

• 4.260-inch bore diameter for precise cylinder fitment
• Low-tension CP20 oil ring assembly for superior oil control and reduced friction
• 2.0mm thickness with .113-inch radial width design
• Chrome-faced rings provide excellent wear resistance and durability
• Engineered using MAHLE's advanced piston ring simulation technology
• Ultra-flat ring flanks maximize ring-to-piston sealing

The CP20 oil ring design features a chemically polished surface for improved oil drain-back and a 20-degree ear angle that ensures superior side sealing around the ring groove. This low-tension configuration minimizes parasitic friction losses, delivering measurable horsepower gains while maintaining exceptional oil control. MAHLE's precision manufacturing ensures consistent ring tension and optimal sealing throughout the engine's operating range, making this ring set an ideal choice for performance rebuilds and racing applications.