ACL Nissan RB25DETT/RB26DETT Standard Size High Performance Main Bearing Set 7M2428H-STD

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The unique combination of design, metallurgy, and engineering come together to deliver what drivers expect from high-performance Trimetal engine bearings. Designed to withstand higher RPM conditions, ACL Race Series Connecting Rod Bearings are available for many of the popular 4, 6 & 8 cylinder applications
  • High strength overlay plate with reduced thickness for improved fatigue properties 
  • Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing. 
  • Increased crush for improved bearing retention
  • Elimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing. 
  • Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films.
  • 3/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings. 
  • Tight consistent wall tolerances to help you maintain consistent clearances. 
  • Enlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts.
Part Number:
  • 7M2428H-STD
  • Main Bearings; Tri-Metal; Upper & Lower; Flange in Position 4
Max Wall at Crown:
  • 0.0719" (1.827mm)
Max Overall Length:
  • 1.063" (27.00mm) w/ 2428H/HX Flange 0.787" (20.00mm) w/ 2429H/HX
Max Std Tunnel Size:
  • 2.3094" (58.658mm)
Min Std Tunnel Size:
  • 2.3089" (58.645mm)
  • Standard
Max Std Shaft Size:
  • 2.1644" (54.975mm)
Min Std Shaft Size:
  • 2.1634" (54.951mm)
Oil Clearance:
  • Standard

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