ACL Race Series big end bearings for the B58 engine, as found in F Series M140i, M240i, 340i, 440i and more. ACL bearings are a vital upgrade that increase the life and strength of your engine.

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.