Main Bearing Set

Corolla, MR2

4A-GE/4A-GZE Engines 

ACL Performance Bearings

STD, STDX, 0.025, 0.25, 0.50

Replacement main bearings

• High performance Trimetal engine bearings
• Designed to withstand higher RPM conditions
• High strength overlay plate with reduced thickness for improved fatigue properties

STD - For brand new or very healthy crankshafts

STDX - For fine tuning bearing clearances -0.025mm

0.025 - For damaged crankshafts that have been reground 0.025 under size 

0.25 - For damaged crankshafts that have been reground 0.25 under size 

0.50 - For damaged crankshafts that have been reground 0.50 under size