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ACL Bearings 5M1957H-.025 Race Series Main Bearings Standard Size

Part of: ACL Bearings Race Series Main Standard Size Engine Bearing Kit

Other options in this family: ACL Bearings 5M8353H-STD ACL Bearings 5M1957H-STD ACL Bearings 5M1959H-STD ACL Bearings 5M8309HX-STD ACL Bearings 5M1219H-.025

Manufacturer

Picture for manufacturer ACL Bearings

Part Number

5M1957H-.025
7 reviews
Sale Price

$86.74

2 left at this price

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Usually delivered within 2 days

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Product Details

The ACL Race Series main bearings are engineered for high-performance and racing applications where durability and precision are critical. These bearings feature ACL's advanced metallurgy and specialized coatings designed to withstand extreme loads, high RPM operation, and elevated temperatures commonly encountered in competition engines.

Key Features:

  • Race Series construction with enhanced fatigue resistance
  • Proprietary tri-metal design for superior strength and embedability
  • Precision machined to tight tolerances for optimal oil clearance
  • -.025mm undersize for crankshaft journal refinishing
  • Advanced surface coatings reduce friction and wear
  • Ideal for turbocharged, supercharged, and naturally aspirated performance builds

ACL Race Series bearings are trusted by professional engine builders and racers worldwide for their consistent quality and proven performance under extreme conditions. The undersize dimension allows proper fitment when crankshaft journals have been machined to restore roundness and surface finish.

Products specifications

Max Overall Length

0.787" (20.00mm)

Max Std Shaft Size

2.1654" (55.000mm)

Max Std Tunnel Size

2.3236" (59.020mm)

Max Wall at Crown

0.0790" (2.007mm)

Min Std Shaft Size

2.1646" (54.980mm)

Min Std Tunnel Size

2.3228" (59.000mm)

Oil Clearance

Standard

Size

.025

Description of part is good

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