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Item #:
89058271
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 |
Item #:
89058271
TZS 737402
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
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Imported from USA store
Order now and get it around Tuesday, July 28
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Replacing your rockers with a true roller bearing setup is highly recommended.
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What Stands Out
Pre-Assembled Design
Simplifies installation for users, saving time and effort in upgrading LS engines while ensuring proper fit and function.
Upgraded Trunnions
Provides increased durability and longevity under high-performance conditions, reducing wear and maintenance needs compared to standard rocker arms.
Wide Compatibility
Fits multiple GM LS Engine variants, making it a versatile choice for various builds and enhancing appeal to a broader audience.
Product Details
| Manufacturer part number | 25100 |
| Vehicle model | 25100 |
| Vehicle make | GM |
| Vehicle fitment type | Specific |
| Automotive parts division | Direct Replacement, Performance |
| Brand | Michigan Motorsports |
| Automotive specialty part type | Rocker Arms |
| Features | Easy Installation |
| Material | 8620 Steel Alloy |
| Finish | Machined |
| Weight | 8 lb (3.63 kg) |
| Has written warranty | No |
| Items included | 16 LS Series Rocker Arms with Roller Bearing Trunnion Upgrade Installedn16 High Strength Allen head bolts for LS Rockers |
| Vehicle type | Motor Vehicle, Truck, Car |
| Compatible cars | LS2 LS6 LQ4 LQ9 LM7 4.8 5.3 5.7 6.0 |
| Pack quantity | 1 |
Who Should Buy?
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Performance Enthusiasts
Ideal for car enthusiasts looking to enhance their GM LS engine's performance with reliable rocker arms.
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Race Applications
Perfect for competitive racing scenarios where enhanced durability and performance reliability are crucial.
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Engine Builders
Useful for professional engine builders seeking a pre-assembled solution to save time and improve engine setups.
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Daily Drivers
Not suitable for standard daily drivers requiring budget-friendly and less aggressive performance components.
Product 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
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is included in the kit?
Answer: The kit includes 16 LS1 rocker arms with roller bearing trunnions, 16 high-strength Allen head bolts, and installation instructions. -
Question:
Is this product suitable for my LS engine?
Answer: Yes, it fits various LS engines including LS1, LS2, LS6, LR4, LM7, and more, but not for Rectangle Port/LS3 Style heads. -
Question:
Why should I replace my stock rocker arms?
Answer: Replacing stock rocker arms with this upgraded kit significantly reduces the risk of bearing failure and improves performance.
Michigan Motorsports Replacement Auto Parts Editorial Review
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“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
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“Accurate delivery timing given”
16 June 2026 · via Trustpilot
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“Not madly expensive like I thought, and much quicker than promised.”
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6/7/2026 · via Trustpilot
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“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”
12 June 2026 · via Trustpilot
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TZS 737402
Order now and get it around Tuesday, July 28
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
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Features & Benefits
- Upgrade to premium 8620 steel alloy for enhanced durability.
- Includes 16 LS1 rocker arms and high-strength installation bolts.
- Professionally installed trunnion bearings for reliability.
- Minimizes failure risks associated with stock needle bearings.
- Ideal for aggressive heads and cam combinations.
- Compatible with a wide range of LS engines.
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