ACL Bearings 4M2006P-30 Race Series Main Bearing Set 0.030" Undersize

The ACL Bearings 4M2006P-30 is a precision-engineered main bearing set designed for performance engine builds requiring 0.030" undersize bearings for reground crankshafts. Part of the ACL Race Series lineup, these bearings deliver race-tested durability and advanced metallurgy for demanding applications.

Key Features:

• Race Series tri-metal construction for superior strength and seizure resistance
• 0.030" undersize for use with reground crankshaft journals
• Precision-machined to micron tolerances for consistent wall thickness and crush
• Enhanced heat dissipation through improved thermal transfer properties
• No flash plating for improved bearing retention and maximum heat transfer
• Proven performance in motorsports from drag racing to road racing applications

ACL Race Series bearings are manufactured with state-of-the-art precision measurement systems to ensure reliable fit and consistent oil clearances. These bearings feature a unique blend of design, metallurgy, and engineering that provides the endurance and capability to perform in high-RPM, high-load conditions where standard bearings cannot.