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. Michigan Motorsports' LS1 Rocker Arms with Trunnion Bearings Professionally Installed
LS1 Rocker Arms have been disassembled and new Trunion Bearings have been professionally installed. LS1 style bolts are included for installation.
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.
Fits all these applications: 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.
16 LS Series Rocker Arms with Roller Bearing Trunnion Upgrade Installed,16 High Strength Allen head bolts for LS Rockers
Replacing your rockers with a true roller bearing setup is highly recommended whether you have a stock LS motor or a highly modified LS motor The stock bearings have a tenancy to fail. These rocker arms are a must have for any aggressive heads and cam combo and are the same rockers we utilize on our 1,000 hp Turbo Motor. We utilize LS1 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 trunnion and caged roller bearings for added durability. The trunion kit's 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. Fits all these applications: LS1/LS2/LS6/ LR4 Vortec 5300 LM7 L59 LM4 L33 - 4.8/5.3/5.7/6.0/ Engines This kit includes: 16 LS1 Rocker Arms 16 rocker arm trunnions- LS-type retrofit 32 rocker arm bearings- LS-type retrofit 32 rocker arm retaining rings- LS-type retrofit 16 bolts for LS trunnion kit.