MAHLE 8725MS-12 Performance Piston Ring Set Bore - 87.25mm 1.2/1.2/2.8mm

The MAHLE 8725MS-12 is a high-performance drop-in piston ring set designed for 87.25mm bore applications, commonly used in sport compact and performance engine builds. This ring set features MAHLE's advanced motorsport engineering with a 1.2mm/1.2mm/2.8mm configuration optimized for durability and reduced friction.

Ring Configuration:

• Top Ring: 1.2mm steel nitrided compression ring for superior wear resistance
• Second Ring: 1.2mm reverse twist cast iron compression ring
• Oil Ring: 2.8mm standard tension 3-piece oil control assembly
• Bore Size: 87.25mm (3.435 inches)

Performance Features:

• Steel nitrided top ring construction provides excellent durability and scuff resistance
• Ultra-flat ring flanks maximize ring-to-piston sealing for improved compression
• Low-friction design delivers measurable horsepower gains
• Reverse twist second ring design enhances oil control
• 3-piece oil control ring assembly ensures optimal oil management

MAHLE Motorsport piston rings are engineered using advanced computer simulation and development tools to minimize friction while maximizing sealing performance. These drop-in rings are part of MAHLE's sport compact ring line, available in bore sizes ranging from 81-100mm, making them suitable for a wide variety of import and performance applications including Honda, Acura, BMW, and other sport compact engines.

This ring set is designed for use with aftermarket performance pistons or precision bore applications where superior ring seal and reduced friction are critical for achieving maximum engine performance and reliability.