ACL Bearings 5M1172H-.025 Race Series Main Bearing Set Undersize - 025

The ACL Bearings 5M1172H-.025 is a high-performance race series main bearing set engineered with a unique blend of design, metallurgy, and precision manufacturing to deliver unmatched durability and performance under extreme conditions. This .025 undersize bearing features upper and lower halves constructed from F780 tri-metal material.

Key Features:

• Multi-layered tri-metal copper alloy construction that blends characteristics to provide high strength and excellent seizure resistance
• High strength overlay plate with reduced thickness and hardened steel backs for added strength
• Increased crush design with 3/4 grooving to provide optimum oil supply
• Manufactured to exact tolerances ensuring a reliable fit and helping to maintain consistent clearances
• Enhanced with extended grooves, increased crush, bearing eccentricity, and enlarged I.D. chamfers

Technical Specifications:

• Width: 1.258 inches
• Outside Diameter: 2.3089-2.3094 inches
• Shaft Diameter: 2.1631-2.1636 inches
• Maximum Wall Thickness: 0.0721 inches
• Bearing Size: .025 undersize

ACL bearings are ideal for tuning and engine upgrades where you want better quality with higher bearing capacity than standard bearings, with improvements in material, dynamic thickness, heat conduction, oil grooves and oil distribution.