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  See more parts for Mitsubishi Evolution
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ACL Mitsubishi 4G63/4G64 7 Bolt Main Bearing .025mm Oversized Trimetal Engine Bearing - 5M1186H-.025

ACL Race Series Engine Bearings - 5M1186H-.025

If you're a Mitsubishi Evolution owner from 1992 to 1999, you know the importance of upgrading your engine components to withstand the demands of high-performance driving. The ACL Race Series Engine Bearings (5M1186H-.025) are engineered specifically for your needs, combining advanced metallurgy and precision engineering to deliver the durability and performance you expect when pushing your vehicle to the limit.

Why Choose ACL Race Series Engine Bearings?

These Trimetal engine bearings are designed to handle higher RPM conditions, making them ideal for both spirited street driving and competitive racing scenarios. Here’s what sets them apart:

  • High-strength overlay plate with reduced thickness enhances fatigue resistance, ensuring longevity even under extreme conditions.
  • Hardened steel backs on all rod bearings provide superior support for the bearing lining and improve retention within the housing.
  • Increased crush enhances bearing retention, keeping everything securely in place during high-stress situations.
  • Elimination of flash plating on the back of the bearings boosts heat transfer efficiency and maximizes grip between the bearings and housing.
  • Designed with increased eccentricity to counteract bore distortion at high RPMs, facilitating the formation of hydrodynamic oil films for better lubrication.
  • Featuring 3/4 grooved main bearings, these optimize load-carrying surface area and ensure efficient oil flow to the conrod bearings.
  • Tight and consistent wall tolerances help maintain precise clearances, an essential factor for performance tuning.
  • Enlarged ID chamfers accommodate large fillet radii on performance crankshafts, ensuring compatibility with upgraded components.

Technical Specifications

  • Size: STD, .025, .25
  • Oil Clearance: Standard
  • Half Type: Identical Halves
  • Material: Tri-metal
  • Min Standard Shaft Size: 2.2435 in / 56.985 mm
  • Max Standard Shaft Size: 2.2441 in / 57 mm
  • Min Standard Tunnel Size: 2.4016 in / 61 mm
  • Max Standard Tunnel Size: 2.4024 in / 61.021 mm
  • Max Wall at Crown: 0.0783 in / 1.99 mm
  • Max Overall Length: 0.8268 in / 21 mm

Customer Feedback

One Mitsubishi Evolution owner shared, "After installing the ACL Race Bearings, I noticed a significant improvement in engine response. They fit perfectly, and I can feel the difference at higher RPMs. Definitely a solid upgrade for anyone looking to push their Evo further!"

Fitment

This bearing set is specifically designed for:

  • Mitsubishi Evolution (1992-1999)

Make the smart choice for your performance build with ACL Race Series Engine Bearings. These components are not just parts; they are crucial for ensuring your engine runs smoothly and efficiently, especially when you’re pushing it to its limits.

Other Part Numbers:
ACL #acl5M1186H-.025

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle
1992-1999
 Mitsubishi Evolution

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Who is ACL?

ACL is a company that specializes in manufacturing and distributing high-quality engine bearings that have played a key role in the Australian automotive parts market. 

Based in Launceston, Tasmania, Australia, the company has been in the business for more than 70 years and has become the leading brand when it comes to its market segment.

Throughout the years, ACL has consistently provided top quality products and has become the equipment supplier of multiple Automotive brands such as Lancia, Mazda, Mini, Mitsubishi, Nissan, Peugeot, Subaru, Toyota, Volvo, Suzuki, Renault, SAAB, and more.  ACL also provides a replacement product range used by the aftermarket industry.

The company ensures that it maintains its high level of standard by employing manufacturing processes that are ISO certified. They also use the industry’s most advanced tooling equipment and designing software that allows them to create products that are superior in quality. ACL has been known worldwide to create bearings that are durable, innovative, and precise.

ACL also offers bearing used for high-performance applications. The company has been involved in motorsport racing since the 1960s and has manufactured bearings used in Brabham Formula 1. Today, their products are being used in different racing disciplines such as the Australian Supercar Championship, Drag racing, Driftings, and Rally.

Purchase ACL Bearings at Vivid Racing

Engine Bearings are a critical component of a vehicle and should not be overlooked. If you want to make sure that what you get is something you could rely on, then ACL is the brand for you. With over 200 engine applications, whether it’s an American, Australian, European, or Asian made vehicle, ACL got you covered. Visit Vivid Racing and check out their list of bearings that would fit your specific needs.

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