ACL Main Race Bearings for WRX EJ20 STi EJ25 5M8297H STD Thrust #3 Position

Description

ACL TRI-METAL RACE SERIES
MAIN BEARINGS SET
Part#
5m8297h-std
(For Thrust in #3 Position)
Applications Includes: EJ16 EJ18 EJ20 EJ22 EJ25 52MM
The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from  high performance Tri-metal engine bearings.
Designed to withstand higher RPM conditions, ACL Race Series Engine Bearings are available for many of the popular 4, 6 & 8 cylinder applications and feature:
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High strength overlay plate
with reduced thickness for improved fatigue properties
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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
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Elimination of flash plating
on the back of the bearings to improve heat transfer through the bearing sand to maximize the grip between the bearings and its housing.
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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 con-rod bearings.
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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.
Important Shipping NOTICE: Posted shipping cost ONLY applies for lower 48 states. Shipping to HI/PR/AK/VI/GU may cost more. Please contact us before you place any order. Thank you.