Are you navigating the complex world of best trunion upgrade? Our team of experts has left no stone unturned in researching and testing the leading products in this field. We’ve conducted extensive comparisons, assessing each product in real-life situations as well as in controlled settings, to truly understand what sets each one apart.
In our thorough analysis, we focus on the core aspects of every best trunion upgrade product. We rigorously evaluate their defining features, overall efficacy, and value for the price, providing you with a perspective that’s both clear-cut and fair. Our evaluation process is thorough, with a spotlight on Build Quality, Functionality, and Economic Value. We appreciate that everyone has distinct needs and financial considerations, and our reviews are designed to help you find the best trunion upgrade that not only meets but also surpasses your expectations.
Editor’s Note: This review was refreshed in March 2026 to bring you the most recent information, including several new alternatives, ensuring our advice stays relevant and comprehensive in the dynamic world of best trunion upgrade products.
Top Products for best trunion upgrade
1. BTR V2 Trunnion Kit LS Premium Rocker Arm Trunion LS LS1 LS3 4.8 5.3 5.7 6.0 6.2 TK002
Key Features:
- BTR Brian Tooley Racing V2 Premium LS Rocker Trunnion Kit
- Fits: LS1 LS2 LS3 LS6 L99 LS4 L99 LQ4 LQ9 L76 L92 LR4 LM7 L59 LM4 L33 L98 L77 LY6 LFA LZ1 LY2 L20 LMF LH6 LY5 LMG LC9 LH8 LS4 4.8 5.3 5.7 6.0 6.2
- The all new Trunnion Kit V2 features a Trunnion with pre-installed inner race bearings. The V1 kits have stood up to an enormous amount of abuse, but we decided to upgrade them to a pressed inner race comprised of 52100 Heat Treated Bearing Steel, over the more commonly used 8620 Carburized Steel found in our V1 kits and many OEM applications.
- Additionally, these feature a self oiling axle with priority feeding to the Trunnion itself.
- This Kit Includes: Brian Tooley Racing V2 Trunnions, Brian Tooley Racing Caged Roller Bearings, Brian Tooley Racing LS Trunnion Clips, LS Trunnion Install Washers
2. Michigan Motorsports LS Rocker Arm Trunion Upgrade Kit – Fits GM LS1 LS2 LS6 LS3 4.8 5.3 5.7 6.0
Key Features:
- Converts a stock LS series Rocker Arm into a Captured Roller Trunion Rocker Arm
- Used on all GM LS style rocker arms
- Fits LS1 LS2 LS3 LS6 L99, LS4, LS7, LS9 LSA LQ4 LQ9 L76 L92 LR4 LM7 L59 LM4
- 4.8 5.3 5.7 6.0 6.2 7.0
- Trunions, Bearings, Retaining Clips, and New Bolts Included
3. Michigan Motorsports LS1 Rocker Arms and Bolts with Trunion Kit Installed Fits LS2 LS6 LQ4 LQ9 LM7 4.8 5.3 5.7 6.0
Key Features:
- Whether you have a stock LS motor or a highly modified LS motor, replacing your rockers with a true roller bearing setup is highly recommended. Michigan Motorsports’ LS1 Rocker Arms with Trunnion Bearings Professionally Installed
- LS1 Rocker Arms have been disassembled and new Trunion Bearings have been professionally installed. LS1 style bolts are included for installation.
- These rocker arms are a must have for any aggressive heads and cam combo.
- We utilize LS rocker arms and install new LS1 rocker arm retro-fit trunion kit that replaces the cageless, loose OEM needle bearings and powdered metal trunion with a premium 8620 steel alloy trunion and caged roller bearings for added durability.
- The caged roller bearings that greatly reduce the possibility of the bearing failure experienced with stock LS1 needle bearings, which can send loose needles throughout the engine upon failure.
- Fits all these applications: LS1/LS2/LS6/ LR4 Vortec 5300 LM7 L59 LM4 L33 – 4.8/5.3/5.7/6.0/ Engines. Will not fit Rectangle Port/”LS3″ Style heads.
- 16 LS Series Rocker Arms with Roller Bearing Trunnion Upgrade Installed,16 High Strength Allen head bolts for LS Rockers
4. BTR V2 Trunnion Kit with Bolts Premium Rocker Arm Trunion LS LS1 LS3 4.8 5.3 5.7 6.0 6.2 TK002
Key Features:
- BTR Brian Tooley Racing V2 Premium LS Rocker Trunnion Kit
- Fits: LS1 LS2 LS3 LS6 L99 LS4 L99 LQ4 LQ9 L76 L92 LR4 LM7 L59 LM4 L33 L98 L77 LY6 LFA LZ1 LY2 L20 LMF LH6 LY5 LMG LC9 LH8 LS4 4.8 5.3 5.7 6.0 6.2
- The all new Trunnion Kit V2 features a Trunnion with pre-installed inner race bearings. The V1 kits have stood up to an enormous amount of abuse, but we decided to upgrade them to a pressed inner race comprised of 52100 Heat Treated Bearing Steel, over the more commonly used 8620 Carburized Steel found in our V1 kits and many OEM applications.
- Additionally, these feature a self oiling axle with priority feeding to the Trunnion itself.
- This Kit Includes: Brian Tooley Racing V2 Trunnions, Brian Tooley Racing Caged Roller Bearings, Brian Tooley Racing LS Trunnion Clips, LS Trunnion Install Washers & Brian Tooley Racing LS Rocker Arm Bolts Qty 16
5. Brian Tooley Racing BTR LS Trunnion Kit V2 Rocker Arm Trunion LS1 LS3 4.8 5.3 5.7 6.0 6.2
Key Features:
- Brian Tooley Racing V2 LS Rocker Trunnion Kit
- Fits: LS1 LS2 LS3 LS6 L99 LS4 L99 LQ4 LQ9 L76 L92 LR4 LM7 L59 LM4 L33 L98 L77 LY6 LFA LZ1 LY2 L20 LMF LH6 LY5 LMG LC9 LH8 LS4 4.8 5.3 5.7 6.0 6.2
- The all new Trunnion Kit V2 features a Trunnion with pre-installed inner race bearings. The V1 kits have stood up to an enormous amount of abuse, but we decided to upgrade them to a pressed inner race comprised of 52100 Heat Treated Bearing Steel, over the more commonly used 8620 Carburized Steel found in our V1 kits and many OEM applications.
- Additionally, these feature a self oiling axle with priority feeding to the Trunnion itself.
- This Kit Includes: Brian Tooley Racing V2 Trunnions, Brian Tooley Racing Caged Roller Bearings, Brian Tooley Racing LS Trunnion Clips, LS Trunnion Install Washers & Brian Tooley Racing LS Rocker Arm Bolts Qty 16
6. Brian Tooley Racing BTR LS Rocker Arm Trunion Kit – 4.8 5.3 5.7 6.0 6.2 LS1 LS3 LQ4 LM7 LM4 Trunnion Set- No bolts
Key Features:
- Brian Tooley LS Rocker Arm Upgrade Trunion Kit Doesn’t include upgraded bolts – stock bolts can be used.
- These LS Series retrofit trunion kits are designed to convert stock LS Series rocker arms into captured roller bearing rocker arms. The factory bearings are a known failure on the LS Engines. When they fail they send small bearings through the entire engine. The upgraded trunions use a captured roller bearing allowing for a reliable smooth rotation.
- The upgraded trunions also give more stability at higher RPM. We use these trunion kits in anything from stock 4.8’s all they way up to 1,000+hp turbo motors.The stock factory LS rocker arms are very strong and very light. Once you upgrade the bearings and trunions the rocker arms handle similar to very expensive roller rocker arms (at a fraction of the cost).
- These are a must have for anyone installing a aftermarket Cam, Supercharger, Turbo or Nitrous.
- Used on all LS style rocker arms including the following: LS1 LS2 LS3 LS6 L99, LS4, LS9 LSA LQ4 LQ9 L76 L92 LR4 LM7 L59 LM4 L33 L98 L77 LY6 LFA LZ1 LY2 L20 LMF LH6 LY5 LMG LC9 LH8 LS4 4.8 5.3 5.7 6.0 6.2
7. AMS Racing Gen III Rocker Arms with Upgraded Trunion Kit for LS1 LS2 LS6 LQ4 LQ9 LM7 4.8 5.3 5.7 6.0 (Rocker Arms Only)
Key Features:
- Kit includes: 16 Gen III LS Series Rocker Arm bodies – 32 rocker arm bearings, 32 rocker arm retaining rings, 16 rocker arm trunnions
- AMS Racing LS Series retrofit trunnions are designed to convert stock LS Series rocker arms into captured roller trunnions for added durability in higher horsepower applications.
- We utilize LS rocker arms and install new LS1 rocker arm retrofit trunion kit that replaces the cageless, loose OEM needle bearings and powdered metal trunion with a premium 8620 steel alloy trunion and caged roller bearings for added durability. The caged roller bearings that greatly reduce the possibility of the bearing failure experienced with stock LS1 needle bearings, which can send loose needles throughout the engine upon failure.
- For use with a max .600″ lift camshaft in all these applications: LS1 LS2 LS6 LR4 Vortec 5300 LM7 L59 LM4 L33 – 4.8 5.3 5.7 6.0 Engines
8. Michigan Motorsports LS1 Bronze Bushing Rocker Arm Trunnion Kit for LS1, LS3, LSX, LQ9, LS2, LS7, 4.8L, 5.3L, 5.7L, 6.0L Trunion
Key Features:
- Includes 16 Trunions, 32 Bushings, 32 Circlips
- Fits all OEM LS Rocker Arms. Replacement Trunnion Kit for LS Engines
- Micro-polished hardened shafts with C932 bearing bronze bushings
- LS1 Rocker Arms Bushing Trunion 4.8 5.3 5.7 6.0 6.2 LSX LQ9 LS2 LS3 LS7 Trunnion
- Our bushing gets more lubrication and has less load applied to it than the bushing in the small end of a connecting rod, giving it long service life.
9. RJSPHH 13702 Rocker Arm Trunnion Upgrade Kit WITH Bolts for GM LS1 LS2 LS6 LS3 4.8 5.3 5.7 6.0
Key Features:
- Fits LS1 LS2 LS3 LS6 L99, LS4, LS7, LS9 LSA LQ4 LQ9 L76 L92 LR4 LM7 L59 LM4 4.8 5.3 5.7 6.0 6.2 7.0
- 16 x Rocker Arm Trunnions, 32 x Rocker Arm Bearings, 32 x Rocker Arm Retaining Rings, 16 x Bolts, 2 x Washers
- Increases stability and stiffness
- These LS Series retrofit trunion kits are designed to convert stock LS Series rocker arms into captured roller trunions for high-rpm race applications.
- These are more economical than new race rocker arms, and can handle much higher RPM than the factory ones.
10. Michigan Motorsports LS Rocker Arm Trunion Install Tool -Fits 4.8 5.3 5.7 6.0 6.2 7.0 LS2 LS3 L83 Gen V
Key Features:
- LS Rocker Arm Trunion Install Tool.This tool allows you to easily install trunion upgrade kits into your LS Rocker Arms. Can be used on Bearing or Bushing style Trunions.
- Rocker arm and trunions in pictures are not included.
- Makes installing an LS trunnion upgrade kit a breeze. Assists with the assembly and disassembly. Works with a vise, press and c-clamp. Embedded magnet allows one-handed assembly. Makes the job easy!
- This LS rocker trunnion install tool makes upgrading your factory rockers a breeze. Designed to be used with an arbor press, bench vise and c-clamp, making this device a a versatile tool in anyone’s toolbox. An embedded magnet allows the tool to attached to a vice or press and allows one-handed assembly. This LS engine helper is designed to allow LS rocker trunnions to be upgraded in less than 30-minutes.
- This is a must have if you own an LS1, LS2 LS3, LS6 or LS7 engine.
The Ultimate Buyer’s Guide for Finding Your Ideal best trunion upgrade
Understanding Your Needs
Understanding Your Needs
Before diving into the market, assess your specific needs and preferences. Consider the features you can’t compromise on and how you plan to use the product.
Quality Matters
High-quality products are more durable and reliable. Look for certifications or standards that indicate a commitment to quality.
Brand Value
Consider the reputation of the brand. A well-established brand often ensures reliability and quality, but don’t overlook emerging brands that might offer innovative features.
Seller Rank
The reputation and reliability of the seller are important. Check their customer service record, delivery policies, and overall customer satisfaction.
Reviews from Customers
Customer reviews provide real-world insights. Look for patterns in reviews to understand the strengths and weaknesses of each product.
Reliability
Assess the long-term reliability of the product. This includes durability, maintenance requirements, and the frequency of needing replacements or repairs.
Ease of Use
A user-friendly product will enhance your overall experience. It should be straightforward to set up, operate, and maintain.
Pricing and Value for Money
Set a realistic budget and compare the features and benefits of each product against its price to find the best value.
Accessibility
Consider how accessible the product is in terms of availability, customer support, and after-sales service.
Comparative Analysis
Use comparative studies and reviews to understand how different products stack up against each other.
Warranty and Support
Check the warranty and customer support services. A robust warranty and responsive support can be invaluable.
Stay Informed
Stay updated with the latest information and developments in the best trunion upgrade market to ensure you are making a decision based on the most current data.
Final Decision
Weigh the pros and cons of your top choices, considering all the factors, to make an informed final decision.
Our comprehensive reviews are designed to guide you through this process, ensuring a well-informed decision that meets your needs and budget.