---
product_id: 50644903
title: "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"
brand: "michigan motorsports"
price: "1703.78 DT"
currency: TND
in_stock: true
url: https://www.desertcart.tn/products/50644903-michigan-motorsports-ls1-rocker-arms-with-upgraded-trunnions-pre-assembled
store_origin: TN
region: Tunisia
---

# Direct fit for GM LS engines Enhanced RPM potential High-performance trunnions 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

**Brand:** michigan motorsports
**Price:** 1703.78 DT
**Availability:** ✅ In Stock

## Summary

> 🏎️ Elevate Your Ride with Unmatched Performance!

## Quick Answers

- **What is this?** 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 by michigan motorsports
- **How much does it cost?** 1703.78 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/50644903-michigan-motorsports-ls1-rocker-arms-with-upgraded-trunnions-pre-assembled)

## Best For

- michigan motorsports enthusiasts

## Why This Product

- Trusted michigan motorsports brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Upgraded trunnion bearings for unmatched durability.
- • **High-RPM Ready:** Optimized for superior valvetrain control.
- • **Precision Engineering:** Machined to OEM specs for perfect fit.
- • **Versatile Compatibility:** Fits a range of LS engine models for ultimate flexibility.
- • **Unleash Your Engine's Potential:** Pre-assembled for effortless installation.

## Overview

The Michigan Motorsports LS1 Rocker Arms with Upgraded Trunnions are pre-assembled components designed for GM LS engines, including popular models like LS1, LS2, and LS6. These rocker arms feature enhanced durability and performance, thanks to upgraded trunnion bearings that replace factory components, ensuring greater strength and reliability under high-performance conditions. Ideal for both performance upgrades and OEM replacements, they are engineered for long-term use and improved high-RPM performance.

## Description

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

## Features

- Pre-Assembled LS1 Rocker Arms with Upgraded Trunnions: Fully assembled and ready to install, featuring high-performance trunnions for improved durability and smoother operation.
- Enhanced Valvetrain Stability: Upgraded trunnion bearings replace the factory needle bearings, providing greater strength and reduced failure risk under high-performance conditions.
- Direct Fit for GM LS Engines: Designed for 4.8L, 5.3L, 5.7L, 6.0L LS-based engines, including LS1, LS2, LS6, LQ4, LQ9, LY5, LM7, and L33, making them ideal for performance upgrades or OEM replacements.
- Improved High-RPM Performance: Upgraded trunnions allow for increased RPM potential and greater valvetrain control, making them a reliable choice for street, strip, and track applications.
- Designed for Long-Term Durability: Machined to OEM specifications with high-strength materials to withstand aggressive camshafts and high-lift applications, ensuring long-lasting performance.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| 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 |
| Is Discontinued By Manufacturer | No |
| Exterior | Machined |
| Manufacturer Part Number | 25100 |

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/81cg-k8QuaL.jpg)

## Questions & Answers

**Q: Are these rocker arms compatible with an LS1 cam swap?**
A: 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?**
A: 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?**
A: Absolutely! These rocker arms feature upgraded trunnions with heavy-duty captured needle bearings for improved performance and durability.

## 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

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-02-07*