Michigan Motorsports LS1 Rocker Arms with Upgraded Trunnions | Pre-Assembled for GM LS Engines | Fits 4.8 5.3 5.7 6.0 LS2 LS6 LQ4 LQ9 LY5 LM7 L33 | Enhanced Durability and Performance

Michigan Motorsports LS1 Rocker Arms with Upgraded Trunnions | Pre-Assembled for GM LS Engines | Fits 4.8 5.3 5.7 6.0 LS2 LS6 LQ4 LQ9 LY5 LM7 L33 | Enhanced Durability and Performance

Q: Are these rocker arms compatible with an LS1 cam swap?

YES! Michigan Motorsports LS1 Rocker Arms are specifically designed to handle aggressive camshaft profiles and high-performance cam swaps.

Q: What engines are these rocker arms compatible with?

These rocker arms are compatible with LS1, LS6, and other GM LS-based engines. Will not fit Rectangle Port/"LS3" Style Heads

Q: Do these rocker arms come with a trunnion upgrade?

Absolutely! These rocker arms feature upgraded trunnions with heavy-duty captured needle bearings for improved performance and durability.

4.7/5

Product ID: 511980172

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🔥Upgraded trunnions for high-RPM durability

🔧Direct fit for multiple GM LS engines

⚙️Pre-assembled for instant install

Frequently Bought Together

Michigan Motorsports LS1 Rocker Arms with Upgraded Trunnions | Pre-Assembled for GM LS Engines | Fits 4.8 5.3 5.7 6.0 LS2 LS6 LQ4 LQ9 LY5 LM7 L33 | Enhanced Durability and Performance

Michigan Motorsports Camshaft Thrust Retainer Plate LS Includes ARP Bolt Kit 134-1002 Gen III IV 4.8 5.3L 6.0L 6.2L LS LS1 LQ4 LQ9 LS2 LS3 Fits 12589016 Non-VVT

Description

⚡ Upgrade your LS valvetrain—because every RPM counts!

BUILT TO LAST - Precision-machined with high-strength materials to endure high-lift cams and aggressive driving without compromise.
RPM UNLEASHED - Enhanced valvetrain stability supports higher RPMs and aggressive camshafts for street, strip, or track dominance.
PLUG PLAY POWER - Pre-assembled rocker arms save installation time and hassle—get back on the road faster.
RACE READY DURABILITY - Upgraded trunnion bearings replace fragile needle bearings, slashing failure risk under extreme conditions.
ENGINEERED FOR EVERY LS - Fits a wide range of GM LS engines (4.8L to 6.0L), perfect for both OEM replacements and performance builds.

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.

Specifications

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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Are these rocker arms compatible with an LS1 cam swap?

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