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.

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

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.

Michigan Motorsports Ls1 Rocker Arms With Upgraded Trunnions Pre Assembled

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Description

⚡ Elevate your LS engine game with rock-solid precision and unstoppable RPM power!

RPM UNLEASHED - Enhanced design supports higher RPMs, unlocking your engine’s true street, strip, and track potential.
TRUSTED BY PROS - Top-rated with 4.7 stars and #1 in replacement rocker arms—join the elite who demand reliability and power.
OEM GRADE MACHINING - Crafted to exact OEM specs with premium materials to endure aggressive camshafts and high-lift setups.
BULLETPROOF BEARINGS - Upgraded trunnion bearings replace factory needles, delivering rock-solid valvetrain stability under extreme conditions.
PLUG PLAY PRECISION - Pre-assembled LS1 rocker arms engineered for seamless GM LS engine fitment—no hassle, just performance.

Michigan Motorsports LS1 Rocker Arms come pre-assembled with upgraded trunnion bearings designed to fit a wide range of GM LS engines (4.8L to 6.0L). Engineered for enhanced durability and high-RPM performance, these rocker arms replace factory components with OEM-spec machining and premium materials, ensuring long-lasting valvetrain stability for street and track enthusiasts alike.

Specifications

ASIN	B01JDIQRQK
Best Sellers Rank	#43,625 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Replacement Engine Rocker Arms
Brand	Michigan Motorsports
Customer Reviews	4.7 4.7 out of 5 stars (334)
Date First Available	August 20, 2015
Exterior	Machined
Is Discontinued By Manufacturer	No
Item Weight	8 pounds
Item model number	25100
Manufacturer	Michigan Motorsports
Manufacturer Part Number	25100
Model	LS1 Rocker Arm Kit
Product Dimensions	8 x 6 x 2 inches

Reviews

M**E

7.01.2026

S**E

16.11.2025

J**B

10.04.2025

A**R

3.06.2025

M**A

25.04.2025

J**.

18.05.2025

I**.

19.04.2025

T**S

18.11.2024

K**N

14.08.2019

M**E

20.05.2019

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