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  • LS1 Rocker Arms with upgraded Trunions Installed Fits 4.8 5.3 5.7 6.0 LS2 LS6 LQ4 LQ9 LY5 LM7 L33
  • LS1 Rocker Arms with upgraded Trunions Installed Fits 4.8 5.3 5.7 6.0 LS2 LS6 LQ4 LQ9 LY5 LM7 L33
  • LS1 Rocker Arms with upgraded Trunions Installed Fits 4.8 5.3 5.7 6.0 LS2 LS6 LQ4 LQ9 LY5 LM7 L33
  • LS1 Rocker Arms with upgraded Trunions Installed Fits 4.8 5.3 5.7 6.0 LS2 LS6 LQ4 LQ9 LY5 LM7 L33
  • LS1 Rocker Arms with upgraded Trunions Installed Fits 4.8 5.3 5.7 6.0 LS2 LS6 LQ4 LQ9 LY5 LM7 L33
  • LS1 Rocker Arms with upgraded Trunions Installed Fits 4.8 5.3 5.7 6.0 LS2 LS6 LQ4 LQ9 LY5 LM7 L33
  • LS1 Rocker Arms with upgraded Trunions Installed Fits 4.8 5.3 5.7 6.0 LS2 LS6 LQ4 LQ9 LY5 LM7 L33
  • LS1 Rocker Arms with upgraded Trunions Installed Fits 4.8 5.3 5.7 6.0 LS2 LS6 LQ4 LQ9 LY5 LM7 L33

    • LS1 Rocker Arms with upgraded Trunions Installed Fits 4.8 5.3 5.7 6.0 LS2 LS6 LQ4 LQ9 LY5 LM7 L33

    Michigan Motorsports

    MSRP: $249.00
    $199.99
    (You save $49.01 )
    (43 reviews) Write a Review
    SKU:
    25100
    UPC:
    00810144060019
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    Product Description

    Michigan Motorsports'  LS1 Rocker Arms with Trunnion Bearings Professionally Installed

    Fits: LS1 LS2 LS6 LR4 LM7 L59 LQ4 LQ9 LM4 L33 LS4 LY2 L20 LY5 LMG LMF LH6 LC9 LH8 LH9

    Also Fits: LS1/LS2/LS6/ LR4 Vortec 5300 LM7 L59 LM4 L33 – 4.8/5.3/5.7/6.0/ Engines. Will not fit Rectangle Port/"LS3" Style heads.

    This kit includes:

    • (16) LS Series Rocker Arms with Roller Bearing Trunnion Upgrade Installed
    • (16) High Strength Allen head bolts for LS Rockers

    Upgraded strength bolts are included for installation. 

    Whether you have a stock LS motor or a highly modified LS motor, replacing your rockers with a true roller bearing setup is highly recommended.  The stock bearings have a tenancy to fail. These rocker arms are a must have for any aggressive heads and cam combo. We utilize LS rocker arms and install new LS1 rocker arm retro-fit trunion kit that replaces the cageless, loose OEM needle bearings and powdered metal trunion with a premium 8620 steel alloy trunion and caged roller bearings for added durability. The caged roller bearings that greatly reduce the possibility of the bearing failure experienced with stock LS1 needle bearings, which can send loose needles throughout the engine upon failure.

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    • 5
      Ls1 upgraded rocker arms

      Posted by Steve Anderson on Jan 13th 2024

      Great quality product

    • 5
      LS1 Rocker arms

      Posted by Casey Noel on Jan 5th 2024

      Perfect fit, easy install, quality product!

    • 5
      Great value

      Posted by Steven DeBettignies on Nov 23rd 2023

      Affordable and dependable

    • 5
      New rockers replacing OEM 5.3L TM7 WITH 322k miles

      Posted by MagMan on Aug 7th 2023

      Orignal miles 322k, 2001 Silverado Z71, replaced Cruz the old ones were ok but needed needed to be replaced!! No failures on oem stuff, just a lot of road miles to South Texas ! Best replacement rocker arm for the old, still runs hard 5.3l. Replaced 4l60e @ 197k, Get these better than OEM STOCK STEEL PINIONS! Maybe I'll get another 322k + on these!

    • 5
      LS1 ROCKER ARMS

      Posted by Glenn Cheeseman on Jul 18th 2023

      Easiest people to deal with. Incredibly fast delivery time! Only two days to Australia.

    • 5
      ls1 rocker arms

      Posted by Michael Lee Williams on Apr 1st 2023

      great product. fast shipping

    • 5
      LS1 ROCKER ARMS WITH UPGRADED TRUNIONS

      Posted by Scot Waitman on Dec 1st 2022

      Nice parts with very fast shipping. Highly recommended!

    • 5
      Rocker arms good!!!

      Posted by Derick on Sep 22nd 2022

      Good quality very well-built works great

    • 5
      Rocker arms

      Posted by Darin on Apr 29th 2022

      These work great! The price is spot on! The only way your beating this price is doing it yourself and as most of us with limited time to work on our projects this saved both time and frustration also giving you the reliability that your looking for!