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  See more parts for Porsche 911 Classic
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ACL Porsche 911/930 Flat 6 Standard Size High Performance Rod Bearing Set 1971-1977 - 6B2455H-STD

When it comes to pushing your engine to the limit, you need bearings that can keep up. That’s where these ACL Race Series Engine Bearings come into play. They’re not just any bearings; they’re built for serious performance, especially if you're running higher RPMs. Whether you’ve got a classic 4, 6, or 8-cylinder engine, these bearings have got you covered.

What makes these bearings stand out?

  • First off, the overlay plate is high strength but thinner than what you usually find. This means they handle fatigue like a champ, which is crucial when you’re pushing your engine hard.
  • All the rod bearings come with hardened steel backs. This isn’t just for show; it really helps support the bearing lining and keeps everything in place within the housing.
  • They’ve cranked up the crush for better retention, so you won’t have to worry about them shifting around when things get intense.
  • No flash plating on the backs means better heat transfer. It’s a simple change that really maximizes how well the bearings grip the housing.
  • With increased eccentricity, these bearings adapt to bore distortion at high RPMs, which helps maintain that essential hydrodynamic oil film.
  • The 3/4 grooved main bearings are designed to optimize load distribution and oil flow to the conrod bearings. This is key for keeping everything lubricated when you’re really pushing it.
  • Tight wall tolerances help maintain consistent clearances, which is super important for performance builds.
  • And those enlarged ID chamfers? They’re there for a reason— to accommodate large fillet radii on performance crankshafts.

Specifications:

  • These bearings are built to last, even under the strain of higher RPMs.
  • They combine solid design, metallurgy, and engineering to meet the demands of performance enthusiasts.
  • Available sizes include STD, .025, and .25, so you can find the right fit for your setup.

Fitment:

If you're working on a Porsche 911 Classic from 1963 to 1977, you're in luck. These bearings are specifically designed for the Porsche 911/930 Flat 6 in standard size. That means you can trust they’ll fit right in without any hassle.

In short, if you’re serious about your engine’s performance, these ACL Race Series Engine Bearings are a solid choice. They’re built for the long haul and ready to handle whatever you throw at them.

Other Part Numbers:
ACL #acl6B2455H-STD

Proposition 65

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

Vehicle
1963-1977
 Porsche 911 Classic

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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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