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  See more parts for Mitsubishi Eclipse
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ACL Mitsubishi 4G63/4G64 7 Bolt 0.25mm Oversized Main Bearing Set for DSM/EVO I-IV - 5M1186-.25
ACL Mitsubishi 4G63/4G64 7 Bolt 0.25mm Oversized Main Bearing Set for DSM/EVO I-IV - 5M1186-.25 - Image 2 ACL Mitsubishi 4G63/4G64 7 Bolt 0.25mm Oversized Main Bearing Set for DSM/EVO I-IV - 5M1186-.25 - Image 2

ACL Race Series Engine Bearings - 5M1186-.25

For those pushing their Mitsubishi Eclipse (1990-2011) or Galant (1994-2012) to the limits, the ACL Race Series Engine Bearings are engineered to meet the demands of high-performance driving. These bearings are crafted with a unique blend of advanced design, metallurgy, and engineering to ensure they can withstand the rigors of high RPM conditions, making them a perfect upgrade for your track or street setup.

Why Choose ACL Race Series Engine Bearings?

When it comes to performance, every detail matters. The 5M1186-.25 bearings provide the reliability and durability that serious drivers expect. Here’s what makes these bearings stand out:

  • High-strength overlay plate with reduced thickness enhances fatigue resistance, ensuring longevity even under extreme conditions.
  • Hardened steel backs on all rod bearings improve support for the bearing lining, enhancing retention within the housing.
  • Increased crush enhances bearing retention, keeping everything firmly in place during high-stress situations.
  • The elimination of flash plating on the back boosts heat transfer efficiency, maximizing grip between the bearings and their housing.
  • Increased eccentricity compensates for bore distortion at high RPMs, aiding in the formation of hydrodynamic oil films.
  • 3/4 grooved main bearings optimize the load-carrying surface area and oil flow to the conrod bearings, critical for performance applications.
  • Tight, consistent wall tolerances help maintain clearances, which is vital for performance tuning.
  • Enlarged ID chamfers accommodate larger fillet radii on performance crankshafts, ensuring a perfect fit.

Technical Specifications

  • Size Options: STD, .025, .25
  • Oil Clearance: Standard
  • Half Type: Identical Halves
  • Material: Tri-metal Hardened Steel Backs
  • 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

Fitment

The 5M1186-.25 bearings are compatible with:

  • Mitsubishi Eclipse (1990-2011)
  • Mitsubishi Galant (1994-2012)

Customer Feedback

Many Mitsubishi Eclipse owners have shared their experiences after installing these bearings. One customer noted, "After upgrading to the ACL Race Series bearings, my 2003 Eclipse runs smoother and holds up better during track days. The oil flow is noticeably improved, and I can push the RPMs higher without worrying about bearing failure." This kind of feedback speaks volumes about the reliability and performance gains you can expect.

Upgrade your engine with the ACL Race Series Engine Bearings and experience the difference in performance and reliability on the road or track.

Other Part Numbers:
ACL #acl5M1186-.25

Proposition 65

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

Vehicle
1990-2011
 Mitsubishi Eclipse
1994-2012
 Mitsubishi Galant

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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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