ACL Bearings 5M2949A-.50 Race Series Main Bearing Set Undersize - 0.50mm

The ACL Bearings 5M2949A-.50 is a high-performance main bearing set designed for precision engine rebuilds requiring 0.50mm undersize bearings. Part of ACL's renowned Race Series line, these bearings are engineered for enthusiasts and professionals who demand exceptional quality and durability in demanding applications.

Race Series Performance Features:

• Tri-metal construction with high-strength overlay plate for improved fatigue resistance
• Hardened steel backing for enhanced bearing retention and support
• Increased crush design for superior bearing retention in the housing
• Enhanced eccentricity to compensate for bore distortion at high RPM
• Optimized oil groove design for improved oil flow and load distribution
• Elimination of flash plating on bearing backs for better heat transfer
• Manufactured to micron-level tolerances for consistent oil clearances

Application: This 0.50mm undersize set is designed for reground crankshafts that have been machined 0.50mm undersize on the main journals. These bearings maintain proper oil clearance specifications when matched with the appropriately machined crankshaft.

ACL has been manufacturing precision engine bearings in Tasmania, Australia for over 70 years and serves as an OEM supplier to the automotive industry worldwide. The Race Series bearings are specifically engineered to withstand high RPM, elevated cylinder pressures, and sustained high loads in performance and racing applications.