MAHLE 3011089B Performance Piston Ring Set Bore Plasma Steel Top Ring - 4.280

The MAHLE 3011089B is a high-performance piston ring set engineered for demanding applications requiring superior sealing and durability. This premium ring set features advanced materials and coatings designed to withstand extreme cylinder pressures and temperatures.

Key Features:

• Plasma steel top compression ring for exceptional strength and wear resistance
• 4.280-inch bore diameter for precise fitment
• 1.0mm top ring thickness for optimal sealing performance
• 0.143-inch radial wall thickness ensures structural integrity
• HVOF (High Velocity Oxygen Fuel) molybdenum coating reduces friction and prevents scuffing
• Performance-grade construction suitable for high-output engines
• Bulk packaging for professional engine builders

MAHLE's plasma steel technology delivers a harder, more durable ring surface that maintains tension and sealing characteristics throughout the engine's operating range. The HVOF moly coating provides superior protection during critical break-in periods and extended service life under severe operating conditions. This ring set is ideal for performance rebuilds, racing applications, and high-horsepower street engines where reliability and power retention are paramount.