ACL Bearings 4B8325H-.25 High Performance Rod Bearing Set Oversized - 0.25mm

The ACL Race Series 4B8325H-.25 is a high-performance connecting rod bearing set engineered for Subaru FB20 and FB25 engines. This 0.25mm oversized bearing set is specifically designed to withstand higher RPM conditions and demanding motorsport applications.

Advanced Tri-Metal Construction:

• High-strength overlay plate with reduced thickness for improved fatigue properties
• Hardened steel backing on all rod bearings for enhanced support and retention
• Tri-metal copper-lead composition for superior load-carrying capacity
• Elimination of flash plating on bearing backs to maximize heat transfer

Performance Features:

• Increased crush design for improved bearing retention in housing
• Enhanced eccentricity to compensate for bore distortion at high RPM
• Tight, consistent wall tolerances for maintaining precise clearances
• Enlarged ID chamfers to accommodate large fillet radius on performance crankshafts
• Optimized to assist in formation of hydrodynamic oil films

ACL Race Series bearings combine precision engineering with proven metallurgy to deliver the endurance required in high-performance and racing applications. The 0.25mm oversize dimension compensates for crankshaft journal machining or wear, making this set ideal for engine rebuilds requiring oversized bearings.