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  See more parts for Mitsubishi Eclipse
Select the year of your Mitsubishi Eclipse:
ACL Mitsubishi 1.25mm Oversized Rod Bearing Set for 1990-2011 Eclipse, 1994-2012 Galant, 1983-1989 Starion - 4B1146-1.25
ACL Mitsubishi 1.25mm Oversized Rod Bearing Set for 1990-2011 Eclipse, 1994-2012 Galant, 1983-1989 Starion - 4B1146-1.25 - Image 2 ACL Mitsubishi 1.25mm Oversized Rod Bearing Set for 1990-2011 Eclipse, 1994-2012 Galant, 1983-1989 Starion - 4B1146-1.25 - Image 2

If you're looking to push your engine's limits without worrying about wear and tear, these ACL Race Series Engine Bearings are a solid choice. They’re designed for the kind of performance that’ll keep up with your high-revving lifestyle. Whether you're tuning up your Mitsubishi Eclipse or giving your Galant a little extra love, these bearings are built to handle the heat and stress.

What makes these bearings stand out?

  • First off, the high-strength overlay plate is thinner, which means it’s got better fatigue properties—perfect for those higher RPMs.
  • All the rod bearings come with hardened steel backs. This not only supports the bearing lining but also helps keep everything snug in the housing.
  • They’ve increased the crush, which translates to better bearing retention. You don’t want your bearings shifting around when you’re pushing your engine hard.
  • No flash plating on the back means heat transfer is improved, helping to keep things cool when the revs climb.
  • With increased eccentricity, these bearings can handle bore distortion at high RPMs, which is crucial for forming those hydrodynamic oil films.
  • The 3/4 grooved main bearings optimize the load-carrying surface and ensure oil flows smoothly to the conrod bearings.
  • Consistent wall tolerances mean you’ll maintain clearances like a pro, which is key for performance builds.
  • And if you’ve got a performance crankshaft, the enlarged ID chamfers on the edges make sure you’re covered for those larger fillet radii.

Let’s get into the specs:

  • Sizes available: STD, .025, .25
  • Oil clearance is standard, so you know what you’re getting.
  • Half type: identical halves, which is pretty standard for easy installation.
  • Material? Tri-metal with hardened steel backs—tough as nails.
  • Min standard shaft size: 2.2433in / 56.980 mm, max is 2.2441in / 57.000 mm.
  • Min tunnel size is 2.4016in / 61.000 mm, and max is 2.4024in / 61.021 mm.
  • Max wall at crown is 0.0783in / 1.990 mm, and max overall length is 0.906in / 23.00 mm.

These bearings fit:

  • Mitsubishi Eclipse (1990-2011)
  • Mitsubishi Galant (1994-2012)
  • Mitsubishi Starion (1983-1989)

So if you’re gearing up for some serious performance work on your ride, these bearings are definitely worth considering. They’ve got the specs and the durability to keep your engine running strong, mile after mile.

Other Part Numbers:
ACL #acl4B1146-1.25

Proposition 65

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

Vehicle
1990-2011
 Mitsubishi Eclipse
1994-2012
 Mitsubishi Galant
1983-1989
 Mitsubishi Starion

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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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