MAHLE 3010985B Performance Piston Ring Set Bore Plasma-Moly Steel - 4.145 1.5mm

The MAHLE 3010985B is a high-performance piston ring set engineered for serious engine builders demanding superior sealing, durability, and reduced friction. Designed for a 4.145-inch bore diameter, this premium ring pack features MAHLE's advanced plasma-moly steel top ring technology for maximum performance in demanding applications.

Advanced Ring Construction:

• 1.5mm x .151" radial wall thickness steel top compression ring with plasma-moly facing
• Plasma-molybdenum coating applied via supersonic thermal spray process for superior bonding strength
• Steel ring construction provides exceptional strength and heat resistance for high-output engines
• Engineered for 4.145-inch cylinder bore diameter
• File-fit design allows precise end gap optimization for your specific application

Plasma-Moly Technology Benefits:

• Porous molybdenum coating retains oil for superior lubrication and reduced friction
• Excellent resistance to flaking with improved bond strength versus conventional coatings
• Fast break-in and immediate seating characteristics minimize run-in time
• Outstanding wear resistance and scuff protection in high-temperature environments
• Reduced coefficient of friction translates to measurable horsepower gains
• Compatible with iron cylinder bores and most performance bore coatings

Performance Applications:

This ring set is ideal for naturally aspirated and moderate boost applications where superior sealing, reduced friction, and long-term durability are critical. The 1.5mm thin ring design reduces reciprocating mass while the plasma-moly steel construction handles the high temperatures and pressures of performance engines. Perfect for street/strip builds, road racing, and serious enthusiast engines up to approximately 2 horsepower per cubic inch.

MAHLE Engineering Excellence:

MAHLE's decades of motorsports experience and pioneering use of computer simulation tools have created ring designs that provide measurable "free" horsepower by minimizing friction losses. Each ring is precision-manufactured to exacting tolerances, ensuring optimal cylinder wall contact, superior compression sealing, and effective oil control.

Note: Proper cylinder bore preparation with appropriate surface finish (400 grit or finer) is essential for plasma-moly rings. Consult MAHLE specifications for recommended ring end gap settings for your specific application.