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Michigan Motorsports LS Rocker Arm Trunnion Upgrade Kit | High-Performance Bearing Upgrade | Fits GM LS1 LS2 LS3 LS6 4.8L 5.3L 5.7L 6.0L Engines

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Product details

Management number 212497643 Release Date 2026/04/06 List Price $34.86 Model Number 212497643
Category

Upgrade your LS engine’s rocker arms with this high-performance LS Rocker Arm Trunnion Upgrade Kit, designed to replace factory rocker arm bearings with durable caged needle bearings. This upgrade eliminates the risk of OEM bearing failure, ensuring smoother operation, increased valvetrain stability, and extended component life—especially in high-RPM and high-performance applications. This kit is compatible with GM LS1, LS2, LS3, LS6, and 4.8L, 5.3L, 5.7L, and 6.0L LS-based engines, making it a perfect fit for Camaro, Corvette, Silverado, Sierra, and other LS-powered vehicles. Whether you're performing a camshaft swap, boosting performance with forced induction, or simply improving reliability, this trunnion upgrade kit is an essential upgrade. The complete installation kit includes upgraded trunnions, caged needle bearings, and all necessary hardware, ensuring an easy installation process with no modifications required. Get improved engine longevity and enhanced valvetrain performance with this must-have upgrade for LS engine builds.

  • High-Strength Construction: The Michigan Motorsports LS Rocker Arm Trunnion Kit is engineered with heavy-duty steel trunnions and high-load needle bearings, ensuring maximum durability and performance for your GM LS engine.
  • Wide Compatibility: Designed to fit 4.8L, 5.3L, 5.7L, 6.0L, 6.2L, 7.0L, LS1, LS2, LS3, LS6, L99, LS4, LS7, LS9, LSA, LQ4, LQ9, L76, L92, LR4, LM7, L59, LM4 engines.
  • Enhanced Valve Train Stability: This kit reduces valve train wear and prevents common factory rocker arm trunnion failures, making it ideal for high-RPM and aggressive camshaft applications.
  • Easy Installation: The Michigan Motorsports LS Trunnion Kit includes all necessary hardware and detailed instructions, allowing for a straightforward installation that minimizes downtime.
  • Improved Performance and Reliability: By reducing friction and increasing load capacity, this trunnion upgrade improves horsepower and torque output while ensuring consistent, long-lasting performance under extreme conditions.
Brand Michigan Motorsports
Model LS Trunion Kit
Exterior Machined
Item Weight 2.94 pounds
Manufacturer Michigan Motorsports
Item model number 55100
Package Dimensions 6.8 x 5.3 x 2.4 inches
Manufacturer Part Number 55100-01
Is Discontinued By Manufacturer No

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