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  See more parts for BMW Z4
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ACL Race Series Conrod Bearing Set .025mm Oversized for BMW M20/M50/M52/M54 1919CC - 6B1490H-.025
ACL Race Series Conrod Bearing Set .025mm Oversized for BMW M20/M50/M52/M54 1919CC - 6B1490H-.025 - Image 2 ACL Race Series Conrod Bearing Set .025mm Oversized for BMW M20/M50/M52/M54 1919CC - 6B1490H-.025 - Image 2

ACL 6B1490H-.025 Conrod Bearing Set

The ACL 6B1490H-.025 is a high-performance conrod bearing set designed specifically for the BMW M20, M50, M52, and M54 engines. With a bore size of 80.0mm and a stroke of 66.0mm, this .025mm oversized bearing set is engineered to meet the demands of both street and track performance. Crafted with precision, these bearings are built to withstand the rigors of higher RPM conditions, ensuring durability and reliability when you need it most.

Features:

  • High strength overlay plate with a reduced thickness, enhancing fatigue resistance.
  • Hardened steel backs on all rod bearings, providing improved support and retention.
  • Increased crush for better bearing retention during operation.
  • Elimination of flash plating on the back, which promotes better heat transfer and grip.
  • Increased eccentricity to counteract bore distortion at high RPM, aiding in hydrodynamic oil film formation.
  • 3/4 grooved main bearings optimize load carrying surface area and oil flow.
  • Tight wall tolerances ensure consistent clearances for better performance.
  • Enlarged ID chamfers accommodate large fillet radii on performance crankshafts.

Specifications:

  • Size: .025mm oversized
  • Oil Clearance: Standard
  • Half Type: Identical Halves
  • Material: Tri-metal with hardened steel backs
  • Min Std Shaft Size: 1.7707in / 44.975 mm
  • Max Std Shaft Size: 1.7713in / 44.991 mm
  • Min Std Tunnel Size: 1.8898in / 48.000 mm
  • Max Std Tunnel Size: 1.8904in / 48.016 mm
  • Max Wall at Crown: 0.0588in / 1.493 mm
  • Max Overall Length: 0.709in / 18.00 mm

Customer Feedback:

"I installed these bearings in my M50 and couldn't be happier. The fit was perfect, and I noticed a smoother operation at higher RPMs. Definitely worth the investment!" - James T.

"These ACL bearings have held up well under track conditions. The quality is evident, and I appreciate the attention to detail in the design." - Mark R.

Other Part Numbers:
ACL #acl6B1490H-.025

Proposition 65

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

Vehicle
2003-2015
 BMW Z4

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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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