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ACL Bearings 5M2975H-STD Race Series Main Bearing Set for Nissan SR20DET

Manufacturer

Picture for manufacturer ACL Bearings

Part Number

5M2975H-STD
15 reviews
Sale Price

$102.09

Estimated ship date Monday, October 19

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Product Details

The ACL Bearings 5M2975H-STD Race Series main bearing set is engineered for high-performance Nissan SR20DET (GTiR) engines requiring enhanced durability and reliability. These standard-size trimetal main bearings combine advanced metallurgy with precision engineering to withstand the demanding conditions of racing and high-RPM applications.

Advanced Design Features:

  • High-strength overlay plate with reduced thickness for improved fatigue properties
  • Hardened steel backs to improve bearing lining support and retention
  • Increased crush for superior bearing retention in the housing
  • Elimination of flash plating on bearing backs to maximize heat transfer and housing grip
  • Increased eccentricity to compensate for bore distortion at high RPM
  • 3/4 grooved main bearing design optimizes load-carrying surface area and oil flow
  • Enlarged ID chamfers to accommodate large fillet radius on performance crankshafts
  • Upper bearing features 5 oil holes for optimal lubrication

Technical Specifications:

  • Part Number: 5M2975H-STD
  • Bearing Size: Standard (STD)
  • Bearing Material: F780 Trimetal
  • Bearing Half Type: Upper and Lower
  • Shaft Size Range: 54.956-54.980mm (2.164-2.165 inches)
  • Tunnel Size Range: 58.944-58.968mm (2.321-2.322 inches)
  • Maximum Overall Length: 19.1mm (0.752 inches)
  • Maximum Wall at Crown: 1.98mm (0.078 inches)
  • Vertical Oil Clearance: 0.004-0.068mm

ACL Race Series bearings are specifically designed for engine builds where superior quality and higher bearing capacity are critical. These bearings represent a significant upgrade over standard OEM components, delivering the performance and durability required for racing, turbocharging, and high-output engine applications.

Products specifications

Size

Standard

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