CM Champ Motorsports
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Performance

LS performance kits

Performance parts for Gen III 4.8, 5.3, and 6.0 LS builds. These options focus on stronger bottom-end fasteners and a more durable rocker arm trunnion setup.

Select an engine on the Identify Engine page to view matched recommendations.
Fasteners

Xotic LS Main Stud Kit

Main studs help keep the main caps clamped more consistently in stronger bottom-end LS builds.

  • Performance main cap fastener upgrade
  • Useful for serious bottom-end refreshes or higher-power plans
  • Follow the manufacturer's torque sequence and lubricant instructions
View item
Valvetrain

Michigan Motorsports LS Rocker Arm Trunnion Upgrade

A rocker arm trunnion upgrade replaces the stock rocker bearing setup with a stronger high-performance bearing package.

  • Good supporting upgrade for cammed or higher-RPM LS engines
  • Helps improve rocker arm durability
  • Choose the install-it-yourself kit or the already-installed version
View upgrade kit View installed version