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Michigan Motorsports LS1 Rocker Arms with Upgraded Trunnions | Fits 1999-2013 4.8L 5.3L 5.7L Cathedral Port LS & 1999-2006 6.0L LS Engines | Complete Set of 16 Ready-to-Install Rockers
✅ In stock
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⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
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Price verified Sep 19, 2026 9:50 PM · Prices & availability subject to change
Is This a Good Price on Amazon?
💤 Not a Deal- 💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
- ➡️Pricing has held fairly steady, with no strong push in either direction.
How We Scored This Deal
Price Competitiveness
0/28
Recent Value
0/22
Market Standing
0/20
Deal Strength
0/20
Momentum
0/10
📝 Product Overview
🏪 Sold by
Michigan Motorsports
🚚 Shipping
Free Shipping
Product Details
✓Complete Set of 16 Rocker Arms: Includes 16 LS series rocker arms with upgraded roller bearing trunnions already installed, giving builders a complete ready-to-install valvetrain upgrade for one LS V8 engine without needing to press apart and rebuild the rockers separately.
✓Upgraded Trunnions Already Installed: Professionally assembled with premium trunnion bearing upgrades before shipment, saving install time while improving durability, reducing friction, and eliminating one of the most common weak points in factory-style LS rocker arm assemblies.
✓8620 Steel Trunnion with Caged Roller Bearings: Built with an 8620 steel alloy trunnion and caged roller bearings for improved strength, smoother rocker arm movement, and better valvetrain stability compared to worn or failure-prone factory needle bearing assemblies.
✓Fits Cathedral Port LS Applications: Designed for 1999-2013 4.8L, 5.3L, and 5.7L cathedral port LS engines and 1999-2006 6.0L LS engines, including LS1, LS2, LS6, LR4, LM7, L59, LQ4, LQ9, LM4, L33, LY5, LMG, LH6, LC9, and related platforms.
✓Ideal for Rebuilds and Performance Builds: A strong upgrade for stock refreshes, heads-and-cam builds, LS swaps, truck builds, and higher-RPM applications where improved rocker arm reliability, better bearing retention, and ready-to-install convenience matter.
⚙️ Specifications
Material
Hardened Steel with Premium Alloy Construction
Bearing Type
Upgraded Trunnion Bearings with Captured Needle Rollers
Applications
LS1, LS6, and compatible GM LS Engines
Performance Features
High-RPM durability, reduced friction, and enhanced valve train stability
Manufacturer
Michigan Motorsports
Brand
Michigan Motorsports
Model
LS1 Rocker Arm Kit
Item Weight
8 pounds
Product Dimensions
8 x 6 x 2 inches
Item model number
25100
Exterior
Machined