King CR4125XPG0.5 XPG pMax Black Rod Bearings Subaru EJ20 EJ22 EJ25 +0.5mm OE

Vehicle Fitment

• 1990-2013 Subaru Legacy (EJ20, EJ22, EJ25, incl. Turbo variants)
• 1995-2016 Subaru Impreza (EJ20, EJ22, EJ25, incl. Turbo variants)
• 1998-2013 Subaru Forester (EJ20, EJ25, incl. Turbo variants)
• 2000-2015 Subaru Outback (EJ22, EJ25, incl. Turbo variants)
• 2002-2014 Subaru WRX (EJ205, EJ255)
• 2003-2006 Subaru Baja (EJ25)
• 2004-2019 Subaru WRX STI (EJ257)
• 2005-2006 Saab 9-2X (EJ20, EJ25)

Fitment Notes

• Fits all Subaru EJ-series 4-cylinder engines with 52mm big-end rod journal diameter only
• +0.5mm oversize - for use with crankshafts reground -.020" (0.5mm) undersize; machining of the crankshaft is required before installation
• All 8 bearing halves are plain (no dowel pin); verify rod housing bore before ordering
• Phase 2 EJ engines (1999+) with 52mm journal confirmed; verify early Phase 1 EJ20 journal size before use
• Always consult your engine builder or machine shop to confirm correct bearing size for your specific clearance targets

Features

• XPG lug design eliminates the conventional lug recess to prevent oil escape and maintain full oil pressure at the rod journal
• Oil slots replaced with precision oil holes for improved oil distribution and more consistent flow - directly addressing EJ-series oil starvation failures
• pMax Black tri-metal overlay is 24% harder than conventional race bearings via a nano-scale molecular hardening process
• 20% higher load capacity than standard tri-metal bearings - engineered for high-boost, sustained high-RPM EJ builds
• Radialock geometry optimizes crush height for secure, stable seating within the rod housing bore
• Wall thickness tolerance held to ±0.0001" for shell-to-shell consistency and minimal selective fitting
• SecureBond adhesion process locks tri-metal layers for superior structural stability under extreme load

Specifications

• Part Number: CR4125XPG0.5
• Bearing Type: Connecting Rod Bearing Set
• Material: Tri-metal pMax Black (copper-lead with nickel barrier and Babbitt overlay over steel backing)
• Size: +0.5mm oversize (for cranks reground -.020" / 0.5mm undersize)
• Rod Journal Diameter: 52mm
• Anti-Friction Coating: Yes
• Dowel Pin Hole: No (all plain halves)
• Machining Required: Yes (crankshaft must be reground to -.020" undersize)
• Wall Thickness Tolerance: ±0.0001"
• Intermediate Load Capacity: 17,000 psi
• Overlay Load Capacity: 10,200 psi
• Application: Subaru EJ-Series H4 Boxer (EJ20, EJ22, EJ25, incl. Turbo)

Included Components

• 4x Connecting Rod Bearing Sets / 8x Total Bearing Shells (CR4125XPG0.5)

Product Description

The King CR4125XPG0.5 is a +0.5mm oversize XPG-series connecting rod bearing set engineered for Subaru EJ20, EJ22, and EJ25 boxer engines, including all turbocharged variants. Sized for crankshafts that have been reground to a -.020" (0.5mm) undersize, these bearings are the correct choice for engine rebuilds where the crank has been machined to restore a proper bearing surface. The XPG design replaces conventional oil slots with precision oil holes, delivering more consistent oil flow directly to the journal - a critical upgrade for high-output EJ builds that are susceptible to oil starvation-related bearing failure.

Built with King's pMax Black tri-metal construction and SecureBond adhesion, these bearings deliver 20% greater load capacity and a 24% harder overlay than standard race bearings, making them well-suited for turbocharged WRX, STI, and performance Impreza builds running elevated boost and forged rotating assemblies. Radialock geometry ensures proper crush height and secure seating, while the ±0.0001" wall thickness tolerance minimizes selective fitting during assembly. Crankshaft machining to -.020" undersize is required prior to installation - always confirm sizing with your engine builder before ordering.