ACL Subaru EJ20/EJ22/EJ25 (For Thrust in #5 Position) Standard Size Main Bearing Set

ACL Aluglide Bearings are a top choice for engine builders especially for reliable engine rebuilds.

 

Aluminium Tin materials have been around since the 1960s. They have traditionally been the choice of Japanese and European manufacturers for low load, gas, passenger cars. As the loads developed by high horsepower late model engines increased, so too did the need for a stronger bearing material. Copper lead Trimetal bearings have been the answer for higher load applications and today make up ACL’s current range of Duraglide® and Race Series engine bearings, but as the world becomes more environmentally conscious, the need for lead free engine components has increased, without sacrificing the load carrying capacity required for modern engines.

 

One of the reasons why Aluglide™ has been such a positive achievement is due to ACL Bearing Company’s in-house research & development, further refining the alloy for a winning advantage over the competition. It features a strip cast microstructure which is the result of the inclusion of alloying elements and careful heat treatment. This gives superior bonding surfaces, particularly between the aluminium bond layer and the steel which are then optimised and remain that way to handle long term maximum loads. Put simply, the new bearings can take a higher load in the way the stress is transmitted to the steel. Additionally, the harder surface of the tough alloy gives substantially reduced wear and minimises any possible shaft abrasion, resulting in an extended service life.

 

- Strip Cast Microstructure

- Superior Bonding Surfaces

- Softer Bearing Material

 

 

- Recommended for stock rebuilds. 

- NOT for race use. 

- Subaru main bearings are specific to either a #5 or #3 journal bearing position. Journal bearing position is not VIN or year specific, it must be known prior to purchase.

 

2004-2021 Subaru STI & Type-RA

2002-2014 Subaru WRX