ACL Race Series big end bearings for the S50B30 engine, as found in the E36 M3 3.0. ACL bearings are a vital upgrade that increase the life and strength of your S50.

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?

Please note that we cannot take opened packets of bearings or bolts as a return – please double check that you have the right components before opening packages.

*Oversized options are for crankshafts that have been machined. Regular sized bearings are for non-machined crankshafts.