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ACL TRI-METAL RACE SERIES
MAIN & ROD BEARINGS SET
Part # 4B8296HX-STD & 5M8309HX-STD
W/ Extra Oil Clearance (0.025mm / 0.001")
Application:
Subaru Impreza WRX & STI 02-10 (EJ20 / EJ22 / EJ25)
w/ Extra Oil Clearance (0.025mm / 0.001")
- ACL RACE SERIES Main Bearing Set Standard Size (5M8309H-STD) (for flange position #5)
- ACL RACE SERIES Rod Bearing Set Standard Size (4B8296H-STD) (for 52mm journal size)
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:
- 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 bearing sand 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 con-rod 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.