ACL Performance Main Bearings 5M1957HX-STD - Honda 4, 1590-1958-2056cc, Race Series

ACL is the top choice among engine builders for its quality and consistency. You can purchase with assurance, knowing that ACL is an Original Equipment supplier found in numerous cars on the road. Many racers, particularly those in the import circuit, trust in both their stock and performance series for crankshaft, rod, and main bearings. ACL's premium bearings are not only more durable than OEM but their specialized coating process also aids in preventing early engine bearing failures and costly engine damage.

ACL Race Series performance bearings are designed for extreme endurance in harsh conditions. If you're planning on running high RPMs and significant boost, fatigue, stress wear, and failure won't be concerns with ACL's superior metallurgy.

The ACL Duraglide Series bearings feature a tri-metal design, offering a blend of high strength and resilience under demanding operating conditions beyond casual driving. They are perfectly suited for performance engines and rebuilds.

Please Note When Ordering Bearings: Engine bearings require proper tolerance to be measured before purchase. If you are not sure what size bearings your build requires, please consult a professional engine builder. We are not responsible for incorrectly ordered bearings and can not take returns or provide exchanges on any engine internal components.

Notes:

H: Standard oil clearance
HX: +0.001 in extra oil clearance
HD: Standard Oil Clearance + Dowel hole in lower half
HXD: +0.001 in extra oil clearance + Dowel hole in lower half