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  • LS Main Crank Bearings .010" Undersize SI-Series for Stock or Performance 4.8 5.3 5.7 6.0 6.2 LS1 LS2 LQ4 LQ9 LS3 L92 L94 L76 L77 LY6 L96
  • LS Main Crank Bearings .010" Undersize SI-Series for Stock or Performance 4.8 5.3 5.7 6.0 6.2 LS1 LS2 LQ4 LQ9 LS3 L92 L94 L76 L77 LY6 L96
  • LS Main Crank Bearings .010" Undersize SI-Series for Stock or Performance 4.8 5.3 5.7 6.0 6.2 LS1 LS2 LQ4 LQ9 LS3 L92 L94 L76 L77 LY6 L96
  • LS Main Crank Bearings .010" Undersize SI-Series for Stock or Performance 4.8 5.3 5.7 6.0 6.2 LS1 LS2 LQ4 LQ9 LS3 L92 L94 L76 L77 LY6 L96
  • LS Main Crank Bearings .010" Undersize SI-Series for Stock or Performance 4.8 5.3 5.7 6.0 6.2 LS1 LS2 LQ4 LQ9 LS3 L92 L94 L76 L77 LY6 L96
  • LS Main Crank Bearings .010" Undersize SI-Series for Stock or Performance 4.8 5.3 5.7 6.0 6.2 LS1 LS2 LQ4 LQ9 LS3 L92 L94 L76 L77 LY6 L96
  • LS Main Crank Bearings .010" Undersize SI-Series for Stock or Performance 4.8 5.3 5.7 6.0 6.2 LS1 LS2 LQ4 LQ9 LS3 L92 L94 L76 L77 LY6 L96
  • LS Main Crank Bearings .010" Undersize SI-Series for Stock or Performance 4.8 5.3 5.7 6.0 6.2 LS1 LS2 LQ4 LQ9 LS3 L92 L94 L76 L77 LY6 L96

    • LS Main Crank Bearings .010" Undersize SI-Series for Stock or Performance 4.8 5.3 5.7 6.0 6.2 LS1 LS2 LQ4 LQ9 LS3 L92 L94 L76 L77 LY6 L96

    Michigan Motorsports

    $54.99
    (1 review) Write a Review
    SKU:
    Ai263
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    Product Description

    Michigan Motorsports Main Bearings – .010" Undersized | SI-Series Bi-Metal Chevy LS Engines

    Michigan Motorsports SI-Series .010" undersized main bearings are engineered for both stock and performance LS engines using factory crankshafts. Manufactured with a durable bi-metal silicon aluminum design, these bearings deliver excellent strength and reliability. SI-Series bearings improve crankshaft finish by reducing microscopic ferrite peaks on improperly ground or polished nodular cast iron crankshafts. Featuring improved oil clearance, they help reduce wear, extend engine life, and minimize operating noise, vibration, and excess oil flow. Perfect for anyone rebuilding or refreshing a Chevy 4.8L, 5.3L, 5.7L, 6.0L, or 6.2L Gen 3/4 LS engine.

    Key Features:

    • Engineered for Performance: Recommended for stock or performance LS engines running factory crankshafts.
    • SI-Series Bi-Metal Design: Built from silicon aluminum for excellent durability and strength under demanding conditions.
    • Improved Crankshaft Finish: Helps reduce microscopic ferrite peaks on nodular cast iron crankshafts for a smoother surface.
    • Optimized Oil Clearance: Reduces wear, extends service life, and helps maintain proper lubrication at all RPMs.
    • Noise & Vibration Reduction: Designed to minimize engine operating noise, vibration, and excess oil flow.

    Fitment / Specs:

    • Size: .010" Undersized
    • Material: Bi-Metal, Silicon Aluminum
    • Applications: Chevy Gen 3/4 LS Engines – 4.8L, 5.3L, 5.7L, 6.0L, 6.2L
    • Includes: Complete set of 5 main bearings

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    • 5
      Main bearings

      Posted by Andy Moorhead on Sep 28th 2023

      Good looking and nice quality. Perfect fit