What does 0.025mm oversized mean for these bearings?

This means the inner diameter of these bearings is 0.025mm larger than the standard size. This is used when the crankshaft journals have been machined undersize to correct wear or to achieve specific clearances during an engine rebuild.

Are these bearings suitable for a stock engine rebuild?

While these are high-performance bearings, they can be used in a stock rebuild if the crankshaft has been machined undersize. For a standard rebuild without any machining, you would typically need a standard size bearing.

What else might I need when installing these main bearings?

You'll need an engine service manual for your specific Lancer model to get the correct installation procedures and torque specifications. It's also recommended to have a good set of engine assembly tools and clean assembly lubricant.

2008-2015 Lancer Main Bearings | ACL 5M1237H-.025

Name: ACL 08+ Mitsubishi 4B11T Evo X 0.025mm Oversized High Performance Main Bearing Set
Brand: ACL
SKU: acl-acl-08-mitsubishi-4b11t-evo-x-0-025mm-oversized-high-performance-main-bearin-t14-13161
Price: 101.35 USD
Availability: InStock

ACL 08+ Mitsubishi 4B11T Evo X 0.025mm Oversized High Performance Main Bearing Set

$101.35

Only 3 left in stock

Fits 2008-2015 Mitsubishi Lancer. ACL 0.025mm oversized main bearing set for high-performance 4B11T engines.

Key Features

Fits 2008, 2010-2015 Mitsubishi Lancer.
ACL high-performance main bearing set.
Designed for the 4B11T engine.
Set is 0.025mm oversized for crankshafts ground undersize.
Well-built for performance applications.

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Product Details

Doing a rebuild on the engine of your 2008-2015 Mitsubishi Lancer with the 4B11T engine? If you're looking to get the most out of your build, especially if you're pushing more power, a solid set of main bearings is crucial. These high-performance main bearings from ACL are specifically made to handle the demands of a performance engine, ensuring the crankshaft stays properly supported under stress.

ACL has been in the bearing game for a long time, and they build these to last. This set is 0.025mm oversized, which is important if you've had your crankshaft ground undersize during a rebuild. This means they'll provide the correct clearance and oil film needed to protect your crankshaft from wear, even when you're running higher boost or RPMs. They're a well-built component that helps ensure the longevity of your engine build.

When you're putting an engine back together, especially a performance one, getting the right clearances is key. Make sure you have your engine service manual handy for the proper installation procedures and torque specifications for these bearings.