ACL Race Series Main Bearings for Version 1 Block Standard Size High Performance

ACL Race Series Main Bearings — Version 1 Block, Standard Size Brand: ACL — engineered for race and high-performance engines. These ACL Race Series main bearings are precision-manufactured to OEM dimensions for Version 1 engine blocks in standard size, delivering reliable support where it counts most. High-performance construction: Optimized materials and coatings reduce wear and improve fatigue strength under extreme RPM and load. Exact OEM fit: Standard size for Version 1 blocks ensures correct clearances and simple installation without machining. Enhanced durability: Improved seizure resistance and conformability protect journals during transient lubrication events. Race-proven reliability: Designed for motorsport applications where consistent oil film and dimensional stability are critical. Choose ACL Race Series main bearings to maintain tight tolerances, extend engine life, and support increased power output. Ideal for engine builders and racers seeking a direct-replacement bearing with advanced performance characteristics.