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  See all Engine products
ACL Suzuki Hayabusa .025mm Oversized High Performance Rod Bearing Set 4B8431H-0.25 - 4B8431H-.025

If you’re pushing your engine to the limit, you’ll want bearings that can keep up. That’s where the ACL Race Series Engine Bearings come into play. These bad boys are crafted with a unique blend of design and metallurgy that really makes a difference when you’re revving high RPMs. They’re available for a range of popular 4, 6, and 8-cylinder setups, so whether you're tuning a street beast or a track-ready machine, there’s a fit for you.

One of the standout features is the high-strength overlay plate. It’s thinner, which might sound counterintuitive, but it actually enhances fatigue resistance. This means you can push your engine harder without worrying as much about wear and tear. Plus, the hardened steel backs on all rod bearings provide solid support for the bearing lining, which helps keep everything in place, even under extreme conditions.

Speaking of staying in place, these bearings have increased crush for even better retention. You won’t have to fret about them shifting around when the going gets tough. The elimination of flash plating on the back also plays a crucial role—it improves heat transfer and maximizes grip in the housing, which is essential for performance applications.

Another nifty feature is the increased eccentricity. This helps compensate for any bore distortion you might encounter at high RPMs, ensuring that hydrodynamic oil films form properly. And if you’re running a performance crankshaft, the enlarged ID chamfers on the bearing edges are designed to accommodate larger fillet radii, making installation a breeze.

Let’s not forget about the 3/4 grooved main bearings, which optimize the load-carrying surface area and enhance oil flow to the conrod bearings. Tight, consistent wall tolerances keep your clearances in check, so you can focus on what really matters—getting the most out of your ride.

In terms of specs, these bearings are built to handle the demands of high-performance engines. You can find sizes like STD and .25, so you can choose what fits your setup best. For instance, if you’re working on a Suzuki Hayabusa, the 4B8431H-.025 set offers a .025mm oversized option that’s perfect for those looking to squeeze out every last bit of power.

In short, if you’re serious about performance, these ACL Race Series Engine Bearings are worth considering. They’re designed to take the heat and keep your engine running smoothly, even when you’re pushing the limits.

Other Part Numbers:
ACL #acl4B8431H-.025

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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