These are ACL Race Series Standard Size Main Bearings for the Subaru EJ20 / EJ255/ EJ257.

The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from ACL Race Series high performance Trimetal engine bearings.

    *  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.

These are the factory thickness, equivalent to the Cosworth Size 1 bearings or the OEM Subaru bearings.

ACL Part # 5M8309H-STD

Shipping and Payment policy

 The Buyer is responsible for all shipping and any applicable customs charges on all Ebay transactions. Credit card payment can be made by calling 303.402.5142 Monday through Saturday between the hours of 9:00 am and 5:00 pm Mountain Standard Time.  All orders will be processed in the order that they are received, and they will usually ship in 48 hours or less, Monday Through Friday.  All orders placed over the weekend will begin being processed on the following Monday.

Please note that Alaskan and Hawaiian orders can only be shipped via air freight so the shipping charges will be higher.

Returns:

Freight will not be refunded on any returned orders, and there will be a 20% restocking fee on all correctly supplied parts.  Returns will not be processed until the parts are received by us in the same condition as they were shipped.  Open bearings are not returnable under any circumstances.

For International Customers:

We do welcome international orders, but we do require that all international orders are processed through Pay-Pal.  Please note that international shipping costs may be higher, and buyer recognizes that they must pay all duties and taxes and additional delivery charges in addition to the shipping charged depending on local customs regulations.

We will not violate any international laws and declare any items less than their actual value, as a gift, or for testing purposes, etc.  Any request to do so will cause us to cancel your order, and will be immediately reported to Ebay.

International Returns:

International items that are not claimed, or are refused will be refunded when we receive the item back, minus all shipping charges to send and receive the item back, and minus all customs charges that are incurred.  Open bearings are not returnable under any circumstances.