MAHLE 3010990B Moly Ring Set Bore Plasma-Moly Top Ring - 4.170 1.5mm

The MAHLE 3010990B is a high-performance piston ring set engineered for precision engine builds requiring a 4.170-inch bore diameter. This professional-grade ring set features advanced materials and coatings designed to maximize performance, durability, and seal integrity in demanding applications.

Key Features:

• 4.170-inch bore diameter for precise fitment
• 1.5mm top ring thickness for optimal tension and sealing
• 0.151-inch radial wall (RW) dimension
• Plasma-moly coating on steel top ring for superior wear resistance
• Reduces friction and improves ring seal during break-in
• Professional-grade construction for performance and racing applications
• Engineered to withstand high cylinder pressures and temperatures

MAHLE's plasma-moly coating technology provides exceptional durability by creating a porous surface that retains oil and promotes faster, more uniform break-in. The steel construction of the top ring delivers strength and dimensional stability under extreme conditions, making this ring set ideal for high-performance street engines, racing applications, and performance rebuilds where reliability and power are paramount.