ACL 7M2394H RACE SERIES MAIN BEARING SET - NISSAN RB20 RB25 RB30

ACL Race Series Performance Engine Bearings-The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Trimetal engine bearings. 

- High strength overlay plate with reduced thickness for improved fatigue properties 
- Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing. 
- Increased crush for improved bearing retention 
- Elimination of flash plating on the back of the bearings to improve heat transfer through the bearing sand to maximize the grip between the bearings and its housing. 
- Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films. 
- Tight consistent wall tolerances to help you maintain consistent clearances. 
- Enlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts.