








⚡ Upgrade your LS valvetrain—because every RPM counts!
Michigan Motorsports LS1 Rocker Arms come pre-assembled with upgraded trunnion bearings, designed to fit a broad range of GM LS engines. Engineered for enhanced durability and high-RPM performance, these rocker arms replace factory needle bearings with stronger trunnions, ensuring long-lasting valvetrain stability for street and track applications.




| Manufacturer | Michigan Motorsports |
| Brand | Michigan Motorsports |
| Model | LS1 Rocker Arm Kit |
| Product Dimensions | 20.32 x 15.24 x 5.08 cm; 3.63 kg |
| Item model number | 25100 |
| Exterior | Machined |
| Manufacturer Part Number | 25100 |
| Item Weight | 3.63 Kilograms |
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