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ACL Honda 1590/1958/2056CC D17 .50 Oversized Main Bearing Set 88-95 Trimetal - 5M1957A-.50
ACL Honda 1590/1958/2056CC D17 .50 Oversized Main Bearing Set 88-95 Trimetal - 5M1957A-.50 - Image 2 ACL Honda 1590/1958/2056CC D17 .50 Oversized Main Bearing Set 88-95 Trimetal - 5M1957A-.50 - Image 2

Alright, let’s talk about these ACL Race Series Engine Bearings. If you’re pushing your engine to its limits, you need bearings that can keep up. These bad boys are engineered to handle those high RPMs without breaking a sweat. They’re not just any bearings; they’re a solid blend of design and metallurgy that really makes a difference when you're on the track or just cruising around.

What sets them apart?

  • The overlay plate is high-strength but thinner, which means they’re built to resist fatigue better than your average bearings. Less weight, more strength—what’s not to love?
  • All rod bearings come with hardened steel backs. This feature isn’t just for show; it really helps keep the bearing lining in place and improves retention in the housing.
  • They’ve got increased crush, which means they stay put where they belong, even under stress.
  • No more flash plating on the back—that’s a big plus for heat transfer. This helps the bearings grip better in their housing, which is crucial when things get hot.
  • Increased eccentricity really shines at high RPMs, helping to counteract bore distortion and allowing for better oil film formation. You want that oil working for you, not against you!
  • With 3/4 grooved main bearings, you’re optimizing the load-carrying surface area and ensuring oil flows smoothly to the conrod bearings.
  • Consistent wall tolerances mean you can keep those clearances tight and reliable.
  • And let’s not forget the enlarged ID chamfers on the edges. They accommodate those larger fillet radii on performance crankshafts, which is a must if you’re running a serious setup.

Here’s the nitty-gritty:

  • Sizes: STD, 025, .25—pick what fits your setup.
  • Oil Clearance: Standard, keeping it simple.
  • Half Type: Identical Halves, because consistency matters.
  • Material: Tri-metal Hardened Steel Backs—these are built to last.
  • Min Std Shaft Size: 2.1646 in / 54.98 mm
  • Max Std Shaft Size: 2.1654 in / 55 mm
  • Min Std Tunnel Size: 2.3228 in / 59 mm
  • Max Std Tunnel Size: 2.3236 in / 59.02 mm
  • Max Wall at Crown: 0.0790 in / 2.007 mm
  • Max Overall Length: 0.7874 in / 20 mm

If you’re working on a Honda D17 engine (like the 1590/1958/2056CC models from '88 to '95), these 0.50 oversized main bearing sets are just what you need to keep things running smooth. They’ll fit right in and help you get the most out of your ride. Trust me, when you’re out there pushing your limits, you’ll be glad you went with ACL.

Other Part Numbers:
ACL #acl5M1957A-.50

Proposition 65

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

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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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