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🚀 Elevate your LS valvetrain game—install strength, speed, and reliability in one sleek package!
Michigan Motorsports LS1 Rocker Arms come as a complete set of 16 pre-assembled rocker arms with upgraded 8620 steel trunnions and caged roller bearings. Designed for 1999-2013 cathedral port LS engines and 1999-2006 6.0L LS engines, these rocker arms improve valvetrain durability, reduce friction, and support higher RPM applications. Perfect for rebuilds, performance upgrades, and LS swaps, they deliver OEM precision fit and enhanced reliability straight out of the box.
| Asin | B01JDIQRQK |
| Best Sellers Rank | #104,631 in Automotive (See Top 100 in Automotive) #8 in Car Engine Rocker Arms |
| Brand | Michigan Motorsports |
| Customer Reviews | 4.7 4.7 out of 5 stars (348) 4.7 out of 5 stars |
| Date First Available | 12 July 2020 |
| Exterior | Machined |
| Item Model Number | 25100 |
| Item Weight | 3.63 Kilograms |
| Manufacturer | Michigan Motorsports |
| Manufacturer Part Number | 25100 |
| Model | LS1 Rocker Arm Kit |
| Oem Part Number | LS1 Rocker Arms |
| Product Dimensions | 20.32 x 15.24 x 5.08 cm; 3.63 kg |
User
Excellent replacement part
Perfect replacement part and seemed to be built better then oem, very happy
User
For a 2012 Silverado 4.8
So far so good went with a btr truck Norris cam and caddy lifters. Btr rods and springs. For a 2012 Silverado. Haven’t tuned it yet and the check engine light went away. Truck loves it.
User
Fit perfect
Good quality
User
Quality parts with fast delivery
Delivered a day earlyNice quality parts
User
Great value for the money. Installed on 243 heads with no issues.
These are not OEM GM rocker arms, but they feel and look nearly identical, no issues in the casting whatsoever that I can see.These are insurance so if you have a rocker fail the needle bearings don't scatter into your motor like the factory rocker arms will.
Trustpilot
1 week ago
2 weeks ago