44Inch 100Lbs Gas Struts Pair for Tonneau Cover and Truck Bed - Heavy
44Inch 100Lbs Gas Struts Pair for Tonneau Cover and Truck Bed - Heavy
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In this review the 44in 100Lbs gas struts are evaluated as a straightforward replacement or upgrade for heavy lids and covers. The kit includes two 44 in struts rated at 445N (100Lbs) each and is best for side lengths over 50 in and lids weighing roughly 80-120lbs per strut. The most compelling reason to buy is the clear, heavy-duty specification and stainless steel construction that promise corrosion resistance for outdoor use; installation is simple for anyone comfortable with basic mounting hardware and the package includes an installation guide.
Key Features
- Force and length: Each strut provides 445N (100Lbs) of force with a 44 in extended length, giving reliable lift for heavier lids and covers.
- Construction: Made from stainless steel with hydraulic oil seals, the struts resist corrosion and are suited for outdoor exposure and harsh weather.
- Ball stud fit: The ends use a 13mm ball stud termination which fits common compatible hardware for straightforward swap-in installation.
- Wide compatibility: Intended for tonneau covers, RV beds, toolboxes, cabinet doors, floor hatches and similar applications where the side length exceeds 50 in.
- Temperature rating: Designed to operate in extreme conditions down to about -104F, making them suitable for cold climates and outdoor use.
- Package contents and support: The set ships with two struts, an installation guide and a 12-month warranty with 24-hour customer service.
Who It's For
This kit is ideal for DIYers and vehicle owners who need a heavy-duty lift support for a lid or cover with a side length greater than 50 in and a per-strut load in the 80-120lbs range. It suits applications such as truck tonneau covers, RV bed compartments, heavy cabinet doors, murphy truck beds, and toolbox lids where corrosion resistance and strength are priorities.
It is not the best choice for very light lids or for projects where the side length is under 50 in or where each strut must handle less than about 80lbs. Also, these struts cannot be safely compressed by hand during installation, so anyone uncomfortable with handling pressurized hardware should seek professional help.
Pros & Cons
Pros
- High lift force and long 44 in extended length suitable for heavy lids.
- Stainless steel build and hydraulic seals offer good corrosion resistance for outdoor use.
- Includes installation guide, warranty and accessible customer support.
- Fits common 13mm ball stud hardware for easier replacement.
Cons
- Some users report variation in long-term strength retention, so durability can be mixed in real use.
- Requires careful handling since the struts cannot be compressed by hand and need proper tools or mounting technique.
Specifications
| Quantity | 2 struts |
| Force | 445N (100Lbs) each |
| Extended length | 44.00 in |
| Compressed length | 24.25 in |
| End fitting | 13mm ball stud |
| Interchange number | ST440M100 |
| Warranty | 12-month |
Our Verdict
The 44in 100Lbs gas struts are a practical, value-minded option for heavy lids and outdoor covers where strength and corrosion resistance matter. They work well in truck, RV and toolbox applications when matched to the recommended side length and weight range, and the included guide and warranty back up the purchase. Buyers who need flawless long-term performance should monitor wear, but for most DIY replacements these struts represent a solid balance of force, materials and price.
Frequently Asked Questions
Can these struts be used outdoors?
Yes. They are made of stainless steel with hydraulic seals and are rated for harsh weather down to very low temperatures.
What lid size and weight are recommended?
They are recommended for lids or covers with a side length over 50 in and a load of about 80-120lbs per strut.
Are tools required to install them?
Yes. The struts cannot be compressed by hand and require proper mounting tools or hardware to install safely.
Editor's Take
A solid, heavy-duty pair of 44in gas struts suited for tonneau covers and truck lids when matched to side length and weight recommendations; good corrosion resistance and value, though long-term strength can vary.

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