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ACL Mitsubishi 4G63/4G64 7 Bolt 2nd Gen DSM and EVO I-IV 0.25mm Oversized High Performance Main Bear

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SKU: acl5M1186H-.25
Part Number: 5M1186H-.25
Notes: Main Bearings; Tri-Metal; Upper & Lower
Manufacturer: ACL
Max Overall Length: 0.827" (21.00mm) w/ 1186H/HX 1.000" (25.40mm) w/ 1187H/HX Flange
Max Std Shaft Size: 2.2441" (57.000mm)
Size: .25
Oil Clearance: Standard
Max Std Tunnel Size: 2.4024" (61.021mm)
Max Wall at Crown: 0.0783" (1.990mm)
Min Std Shaft Size: 2.2435" (56.985mm)
Min Std Tunnel Size: 2.4016" (61.000mm)

Product Category: Bearings

Our Price: $118.88



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

Designed to withstand higher RPM conditions, ACL Race Series Connecting Rod Bearings are available for many of the popular 4, 6 & 8 cylinder applications and feature:

* *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.

Additional Information

Manufacturer Description
A distinguished pedigree and track record. Race Series performance bearings and gaskets are products of more than a half-century of ACL bearing design, engineering, metallurgy and manufacturing experience. They are used extensively in the US. and Canada and are the overwhelming choice of racers and engine builders worldwide. ACL's experience includes designing and manufacturing bearings, gaskets and other car and truck engine components for GM, Ford, Toyota and Mitsubishi.
Manufacturer Part Number 5M1186H-.25
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