ACL Race Big End Bearings (M20/M50/M52/M54)
ACL Race Series big end bearings for the M20, M50, M52 and M54 engines, as found in many 3 Series, 5 Series, Z3/Z4 etc. ACL bearings are a vital upgrade that increase the life and strength of your engine.
Choose from OE size, or HX series for an extra .001″ oil clearance. Oversizes available by request. Combine with ARP connecting rod bolts for the perfect upgrade.
Why not add a bottle of Hack Engineering Engine Assembly Lubricant to protect your new bearings on first start up?