ACL Bearings 5M8353H-.50 Race Series Main Bearing Set Oversize - 50mm

ACL Bearings Race Series main bearing set designed for high-performance and racing applications in Mazda B6, B6-T, BP, BP-T, and ZM engines. This bearing set features .50mm oversize dimensions for rebuilt crankshafts and cylinders requiring enlarged bearing clearances.

Advanced Trimetal Construction:

• Multi-layered trimetal design with lead, tin, copper, and nickel alloy for superior strength and seizure resistance
• High-strength overlay plate with reduced thickness for improved fatigue properties
• Hardened steel backing for enhanced bearing support and retention
• Increased crush design for improved bearing retention and heat dissipation

Race-Engineered Features:

• 3/4 grooved design optimizes load carrying surface area and oil flow to connecting rod bearings
• Increased eccentricity compensates for bore distortion at high RPM and assists hydrodynamic oil film formation
• Elimination of flash plating on bearing backs improves heat transfer and maximizes grip in housing
• Enlarged ID chamfers accommodate large fillet radius on performance crankshafts
• Tight consistent wall tolerances maintain precise bearing clearances

ACL Race Series bearings are identified by the "H" suffix and are engineered to withstand extreme RPM conditions, high boost applications, and demanding racing environments. These bearings deliver proven performance in everything from street performance builds to professional motorsports competitions.