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  See more parts for Porsche 911 Classic
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ACL Porsche 911/930 Flat 6 .25mm Oversized High Performance Rod Bearing Set 71-77 - 6B2455H-.25

If you're looking to push your ride to the next level, you’ve got to check out these ACL Race Series Engine Bearings. They’re not just another set of bearings; they’re built for performance enthusiasts who know what it takes to keep their engines running strong, especially when you’re cranking up those RPMs. Whether you’re hammering down the track or just cruising on the weekends, these bearings have got your back.

So, what makes these bearings stand out? For starters, they feature a high-strength overlay plate that’s thinner than your average bearing. This isn’t just for show; it actually improves fatigue resistance, which means they hold up better under stress. Plus, all the rod bearings come with hardened steel backs. This is a game changer because it enhances the support for the bearing lining and keeps everything snug in the housing.

  • The increased crush helps with bearing retention, so you won’t have to worry about them moving around when the engine gets hot and heavy.
  • No flash plating on the back means better heat transfer. This helps keep everything cool and maximizes the grip between the bearings and the housing.
  • They’ve also got increased eccentricity to deal with bore distortion at high RPMs. This feature helps in forming those all-important hydrodynamic oil films, which are crucial for smooth operation.
  • And let’s not forget about the 3/4 grooved main bearings. They optimize load carrying surface area and ensure that oil flows just right to the conrod bearings.
  • With tight, consistent wall tolerances, you’ll maintain clearances that are spot on, which is essential for performance.
  • Finally, enlarged ID chamfers on the edges help accommodate those larger fillet radii on performance crankshafts.

When it comes to specs, these bearings are available in sizes: STD, .025, and .25. They're designed to handle the demands of high RPM situations, so you can trust them to deliver when it counts.

These bearings are a perfect fit for the Porsche 911 Classic from 1963-1977. Specifically, you’ll want to grab the 6B2455H-.25 ACL Porsche 911/930 Flat 6 .25mm Oversized High Performance Rod Bearing Set if you’re looking to upgrade. They’re built to keep your classic running smoothly and efficiently, so you can enjoy every moment behind the wheel.

Other Part Numbers:
ACL #acl6B2455H-.25

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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