Michigan Motorsports LS3 Rocker Arm Kit with Upgraded Trunnions Installed and OEM LS3 Stands | Fits L99 L76 L92 | LS Valvetrain Upgrade for Enhanced Stability and Durability

Upgrade your LS3 valvetrain with the Michigan Motorsports LS3 Rocker Arms and Stands with Trunion Kit Installed, designed to enhance stability, durability, and performance in high-horsepower applications. This kit includes genuine GM LS3 stands (GM Part #12600936) and pre-assembled rocker arms with a high-performance trunion upgrade, making it the perfect choice for LS3, L99, L76, and L92 engine owners. Unlike stock LS3 rocker arms that rely on weak needle bearings, this upgraded trunion kit features bronze bushings for improved strength and reliability, reducing the risk of failure in high-RPM conditions. The included CNC-machined rocker stands ensure perfect valvetrain geometry, maintaining precise alignment under extreme loads. Whether you're building a track-ready LS engine, upgrading for more power, or ensuring long-term reliability, Michigan Motorsports delivers high-quality valvetrain components engineered for performance. With direct bolt-on fitment, this kit simplifies installation and provides immediate benefits in stability, longevity, and power potential. Take your LS build to the next level with Michigan Motorsports—precision-engineered for serious performance.

• Complete LS3 Rocker Arm Upgrade with Trunion Kit – Michigan Motorsports delivers a premium LS3 rocker arm assembly pre-installed with a high-performance trunion upgrade, eliminating factory needle bearings for superior strength and longevity.
• Includes GM Rocker Stand Part #12600936 – This kit comes with genuine GM LS3 stands (12600936), ensuring precise fitment and optimal valvetrain geometry for LS3, L99, L76, and L92 applications.
• Stronger, More Durable Trunion System – Upgraded bronze bushings replace the weak factory needle bearings, reducing wear and increasing durability in high-RPM and high-load conditions.
• OEM Stands for Enhanced Stability – GM LS3 rocker stands provide a secure and accurate fit, maintaining proper rocker arm alignment under high performance conditions.
• Direct Bolt-On Installation for LS3-Based Engines – No modifications required. This pre-assembled rocker arm kit ensures a straightforward installation, making it ideal for LS performance builds, engine swaps, and valvetrain upgrades.