What is the main difference between these Race Series bearings and stock bearings?

The ACL Race Series bearings use a specialized overlay material that offers improved durability and fatigue resistance compared to stock bearings. They are designed to maintain proper oil clearance even under the higher stresses of performance driving.

Do these bearings require any machining to the crankshaft?

No, this is a standard size bearing set. They are designed to replace your original bearings directly without requiring any machining to the crankshaft, assuming your crankshaft journals are in good condition.

What is recommended for installing these connecting rod bearings?

It is crucial to ensure the connecting rods and crankshaft journals are perfectly clean before installation. Using a high-quality assembly lube is also essential to protect the bearings during the initial engine startup and break-in period. Refer to the manufacturer's installation instructions for detailed guidance.

ACL BMW S65 V8 (E90 M3) Race Series High Performance Con Rod Bearing Set

Specifications

Brand: ACL
Part #: 8B1580H-STD
UPC: 9315726443507

ACL BMW S65 V8 (E90 M3) Race Series High Performance Con Rod Bearing Set

Name: ACL BMW S65 V8 (E90 M3) Race Series High Performance Con Rod Bearing Set
Brand: ACL
SKU: acl-acl-bmw-s65-v8-e90-m3-race-series-high-performance-con-rod-bearing-set-t14-130238
Price: 239.83 USD
Availability: BackOrder

$239.83

On Backorder — Expected to ship by Apr 23, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 2008-2013 BMW M3. ACL Race Series con rod bearings for improved engine reliability under demanding conditions.

Key Features

Fits 2008-2013 BMW M3.
ACL Race Series connecting rod bearings.
Standard size for direct replacement.
Specialized overlay material for improved durability.
Designed to maintain proper oil clearance under load.

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Fits this vehicle

BMW M3 2008-2013

Product Details

ACL has been making engine bearings for a long time, and this Race Series set is a well-built option for enthusiasts who want a bit more durability than stock. They use a specialized overlay material that's known for its strength and ability to resist fatigue, even when the engine is running at high RPMs or under heavy load. This particular set is standard size, meaning it's meant to replace your original bearings without needing any machining to the crankshaft. If you're already planning on doing some engine work or just want to upgrade for peace of mind, these bearings are a solid choice.

When installing these bearings, it's important to follow the manufacturer's instructions carefully. Proper cleaning of the connecting rods and crankshaft journals is essential, as is checking and setting the correct oil clearance. Make sure you have a good quality assembly lube on hand, as this will help protect the bearings during initial startup. If you're not comfortable with this level of engine work, it's always best to have a qualified mechanic handle the installation.