ACL Race Main Bearings Set +0.25mm Subaru WRX EJ205 EJ255 STi EJ257 Flange #5

10+ In Stock

10+ of these are currently available in stock at our Sanford, FL location.


One often overlooked part when building an engine is the bearings. Getting a quality set of bearings can directly determine the longevity of your engine. The -.25mm on the end of this part number means that the bearing is thicker than a standard bearing. These should be used when your crank has been cut .25mm (.010") under.
ACL Race Series Performance Engine Bearings

The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Trimetal engine bearings. Designed to withstand higher RPM conditions

  • High strength overlay plate with reduced thickness for improved fatigue properties
  • Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing.
  • Increased crush for improved bearing retention
  • Elimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing.
  • Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films.
  • 3/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings.
  • Tight consistent wall tolerances to help you maintain consistent clearances.
  • Enlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts.


More Information
Availability New In Stock / Available
Barcode 9315726311868
UPC Code 9315726311868
Shipping Weight (Dimensional) 0.750000
Clearance Sale No
Availability In Stock
Part Type Main Bearings
Make Subaru
Model STI JDM 01-02 GD, STi 04-07 GD, STi 08-14 GR, STi 15-21 VA, WRX 02-05 GD, WRX 02-05 GG, WRX 06-07 GD, WRX 06-07 GG, WRX 08-14 GR
Engine EJ205, EJ207, EJ255, EJ257, EJ257B
Brand ACL Performance
Competitor Interchange Part Number MB5382XPG0.25
Bearing Class Race
Bearing oversize 0.010" / 0.25mm
Carb Legal Unspecified
Product Flags sale
Shipping Label Free Shipping


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