This ACL High Performance connecting rod bearing set is sized 0.025mm (0.001") over standard for the Mitsubishi 4B11T 1998cc turbocharged inline-4, used in the Lancer Evolution X. The 0.025mm oversize is for connecting rod journals that have been reground to that undersize spec — not for a stock, unmachined crankshaft. Fits 2008 and 2010-2015 Evolution GSR/MR/MR Touring/SE/Ralliart/Ralliart Sportback and the 2015 Evolution Final Edition.
Specifications:
- Type: Connecting Rod Bearing Set
- Series: High Performance
- Size: 0.025mm (0.001") Oversized
- Engine Fitment: Mitsubishi 4B11T 1998cc Inline-4 DOHC Turbo
- Vehicle Platform: Mitsubishi Lancer Evolution X (2008, 2010-2015)
- Part Number: 4B1236H-.025
FAQ
What does the 0.025mm oversize mean?
It means the bearing shell is 0.025mm (0.001") thicker than standard, sized for a connecting rod journal that has been reground to that undersize — it is not for a stock, unmachined crankshaft.
What engine does this rod bearing set fit?
It's designed for the Mitsubishi 4B11T 1998cc turbocharged inline-4 used in the Lancer Evolution X.
Which Evolution X trims does this fit?
It fits the 2008 and 2010-2015 Evolution GSR, MR, MR Touring, SE, Ralliart, and Ralliart Sportback, as well as the 2015 Evolution Final Edition.
Is this a High Performance series bearing?
Yes, this is part of ACL's High Performance rod bearing line.

