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  See more parts for Nissan GTR
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ACL Nissan GTR Standard Sized High Performance Main Bearing Set 2009-2021, Tri-Metal - 1M2505H-STD-1

ACL 1M2505H-STD-1 Race Series Engine Bearings

If you’re pushing your Nissan GTR (2009-2021) to its limits, you need engine components that can keep up. The ACL 1M2505H-STD-1 Race Series Engine Bearings are engineered specifically for high-performance applications, making them a critical upgrade for any serious driver. With a focus on durability and efficiency, these tri-metal bearings are designed to thrive under higher RPMs, ensuring your engine runs smoothly even when the heat is on.

Key Features

  • High-strength overlay plate with reduced thickness enhances fatigue resistance, allowing for longer-lasting performance.
  • Hardened steel backs on all rod bearings improve support for the bearing lining and assist with retention in the housing.
  • Increased crush enhances bearing retention, ensuring a secure fit.
  • Elimination of flash plating on the back of the bearings improves heat transfer and maximizes grip between the bearings and housing.
  • Increased eccentricity compensates for bore distortion at high RPM, promoting the formation of hydrodynamic oil films.
  • 3/4 grooved main bearings optimize load-carrying surface area and enhance oil flow to the conrod bearings.
  • Tight wall tolerances maintain consistent clearances, critical for performance applications.
  • Enlarged ID chamfers accommodate large fillet radii on performance crankshafts, ensuring a perfect fit.

Technical Specifications

  • Size Options: Std-0, Std-1, Std-2, Std-3, Std-4
  • Oil Clearance: Standard (Graded)
  • Half Type: Upper & Lower
  • Material: Tri-metal with hardened steel backs
  • Min Std Shaft Size: 2.5571 in / 64.951 mm
  • Max Std Shaft Size: 2.5581 in / 64.975 mm
  • Min Std Tunnel Size: 2.7556 in / 69.993 mm
  • Max Std Tunnel Size: 2.7566 in / 70.017 mm
  • Max Wall at Crown:
    • Std-0: 2.500-2.504 mm / 0.0984-0.0986 in
    • Std-1: 2.505-2.509 mm / 0.0986-0.0988 in
    • Std-2: 2.510-2.514 mm / 0.0988-0.0990 in
    • Std-3: 2.515-2.519 mm / 0.0990-0.0992 in
    • Std-4: 2.520-2.524 mm / 0.0992-0.0994 in
  • Max Overall Length: 0.7874 in / 20.00 mm

Why Choose ACL Bearings?

For GTR owners looking to maximize engine performance, the ACL 1M2505H-STD-1 bearings are a must-have. They provide the reliability and strength needed for spirited driving and track days. As one satisfied GTR owner put it, "After installing these bearings, I noticed a significant improvement in my engine's responsiveness at high RPMs. They fit perfectly, and I feel more confident pushing my GTR to the limit." Don't compromise on your build; equip your GTR with ACL Race Series Engine Bearings and experience the difference.

Other Part Numbers:
ACL #acl1M2505H-STD-1

Proposition 65

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

Vehicle
2009-2021
 Nissan GTR

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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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