There’s a moment every vehicle owner knows well: the trunk lid or hatchback that falls on your head while you’re loading groceries, the tailgate that won’t stay up, or the heavy camper shell door that crashes down without warning. Worn-out gas struts turn a simple task into a frustrating balancing act. Replacing them restores the effortless, controlled lift that makes your car, truck, or RV feel whole again.
I’m Amir — the founder and writer behind Four Wheel Ask. I’ve analyzed hundreds of gas spring specifications, matched vehicle fitment across decades of make and model data, and evaluated owner feedback to identify the struts that deliver reliable lifting force and long-term sealing integrity.
Whether you’re refreshing a daily driver, restoring a project car, or upgrading an RV storage door, finding the right match means understanding extended length, compressed length, and the critical force rating measured in pounds or Newtons. This guide cuts through the confusion to help you secure the best automotive gas struts for your exact application.
How To Choose The Best Automotive Gas Struts
Selecting the right gas strut for your vehicle, camper shell, or equipment door comes down to three measurements and one material check. Ignore any of these, and you risk buying a strut that is either too weak, too powerful, or physically won’t bolt on.
Extended and Compressed Length
The extended length (center of the upper ball socket to center of the lower ball socket when fully open) dictates how far the lid rises. The compressed length (fully closed position) determines whether the strut fits inside the closed space without bottoming out. Always measure your existing strut at both extremes. A difference of even half an inch can prevent installation or cause binding.
Force Rating (Pounds or Newtons)
This is the lifting power. Too low, and the lid sags; too high, and the lid becomes dangerously hard to close or may damage hinges. A standard tailgate or hatchback typically uses 40–50 lb per strut, but heavy fiberglass camper shells, truck toppers, or wood-paneled RV doors often require 75–150 lb. Weigh your lid by balancing it on a bathroom scale to get an accurate number, then divide by the number of struts.
End Fitting and Bracket Compatibility
Most struts use 10mm nylon or steel ball sockets, but some applications call for eyelet ends, flat brackets, or L-brackets. Verify the diameter of the mounting studs on your vehicle. The included hardware — screws, brackets, and retainer clips — can save you a second trip to the hardware store.
Quick Comparison
On smaller screens, swipe sideways to see the full table.
| Model | Category | Best For | Key Spec | Amazon |
|---|---|---|---|---|
| SUSPA C16-04270 | Universal | Heavy storage lids and camper shells | 47 lb force per strut | Amazon |
| Euplokeer GSNI-5150-50 | Universal | RV storage doors and boat hatches | 50 lb force, 15″ extended | Amazon |
| AiYiGu PM3074 L-R | Vehicle-Specific | Subaru Legacy/Outback rear hatch | 22.87″ extended length | Amazon |
| A-Premium 74820-SZA-A21 | Vehicle-Specific | Honda Pilot power liftgate | 20.94″ extended length | Amazon |
| TadaMark 4860 | Vehicle-Specific | Camaro/Firebird rear hatch | 29.21″ extended length | Amazon |
| A-Premium 04589645AB | Vehicle-Specific | Dodge Challenger trunk with spoiler | 7.63″ extended length | Amazon |
| Euplokeer GSNI-5300-40 | Universal | RV beds and camper toppers | 40 lb force, 20″ extended | Amazon |
In‑Depth Reviews
1. SUSPA C16-04270 Gas Spring (Set of 2)
SUSPA is the name you see on factory-installed struts from major automakers, and the C16-04270 set carries that same engineering DNA. Rated at 47 lb per strut with a 17.1-inch extended length and 10.8-inch compressed length, these 10mm nylon ball socket units are built to handle heavy plywood storage lids, fiberglass camper shells, and truck toppers with authority. The manufacturing tolerances are tight enough that multiple owners report the same pair lasting well over a decade in outdoor, high-cycle use.
The set is made in the USA, and the gas spring uses a high-quality seal that resists the slow gas leakage that plagues budget struts. Installation is straightforward — a flat-head screwdriver and a few minutes of prying off old ball clips is all it takes. The SUSPA is actually the OEM replacement for many SnugTop shells and custom storage builds, a testament to its consistent force curve and corrosion resistance.
Where this pair truly shines is in applications that demand a moderate force combined with a long service life. The 47 lb rating is sweet-spot territory for most mid-size hatches and lids, but the non-adjustable force means you should confirm your lid weighs roughly 90–95 lb total. If you need to hold up a queen-size RV mattress or a heavy steel door, you will want a higher force rating.
What works
- Proven 14-plus-year lifespan in real-world use
- Smooth, consistent damping throughout the stroke
- Made in the USA with tight quality control
What doesn’t
- 47 lb force may be too low for heavy fiberglass caps
- No mounting brackets included
2. Euplokeer GSNI-5150-50 (Set of 2)
The Euplokeer GSNI-5150-50 set is a smart choice for the RV owner or DIY builder who needs mounting hardware included. Each 15-inch strut delivers 50 lb of force, and the package comes with two L-brackets, two flat-bottomed brackets, and 16 screws, so you can install them on wooden RV compartment doors, boat engine hatches, or even a custom food truck window without sourcing extra parts.
The alloy steel construction feels solid and the hydraulic action is quiet and smooth, a notable improvement over struts that hiss or chatter during extension. Owners have successfully used these on Western golf cart boots and queen-bed platforms in travel trailers, which shows the 50 lb force handles a range of medium-duty tasks. The 15-month exchange warranty from Euplokeer adds a layer of confidence that budget-grade generic struts rarely offer.
One practical limitation is the fixed 15-inch extended length. If your application requires a longer throw to clear a deep compartment, you will need a longer strut. Also, while the mounting brackets are versatile, the flat-bottomed brackets are designed for wood surfaces and may not suit metal framing without additional drilling.
What works
- Includes all mounting brackets and screws
- Strong 50 lb force per strut for medium loads
- 15-month exchange warranty
What doesn’t
- 15-inch length limits deep-compartment applications
- Flat brackets best suited for wood surfaces
3. AiYiGu PM3074 L-R (Set of 2)
The AiYiGu PM3074 set is laser-focused on a single family: Subaru Legacy and Outback models from 2010 to 2014. With a compressed length of 13.18 inches and an extended length of 22.87 inches, these struts replicate the OEM geometry exactly. The chrome-plated rod and alloy steel body resist the corrosion that lifts Subaru hatches in snowy or coastal climates, and the left/right pair is clearly marked for simple installation.
Owner feedback from 2010–2013 Outback and Legacy owners is overwhelmingly consistent — installation takes under ten minutes using a 10mm socket and an 11mm wrench. The lift force is calibrated to the factory hatch weight, so the lid rises smoothly without requiring a strong pull, and it stays up without drifting down. The included four screws are adequate, though some owners recommend applying anti-seize to the ball stud threads for future removal.
The main trade-off is zero universality. If you are not driving a fourth-gen Legacy or Outback, these struts will not fit. Also, the ball socket design differs slightly from the genuine Subaru part — one fewer swivel joint — which a small number of owners noted required them to reposition the retainer clip slightly.
What works
- Precise drop-in fit for 2010–2014 Legacy/Outback
- Smooth, OEM-matching lift force
- Fast installation with basic hand tools
What doesn’t
- Only fits Subaru Legacy/Outback of that era
- Ball socket design varies slightly from OEM
4. A-Premium APGS0207MF (Set of 2)
The A-Premium APGS0207MF set is built specifically for the Honda Pilot 2009–2015 models equipped with the factory power liftgate. The extended length of 20.94 inches and compressed length of 13.7 inches match the original Suzuki-made struts, and the carbon steel body with a corrosion-resistant rod finish is designed to outlast the original units that typically begin sagging after a decade of use.
These struts are engineered for the heavier power-liftgate mechanism, meaning they exert enough force to counterbalance the glass and metal tailgate without making manual closing a struggle. Owners of 2009–2013 Pilot Touring trims report that installation is a true two-minute job — no special tools, no cutting, and no adapters. The one-year unlimited-mileage warranty is a meaningful safety net for a part that sees daily cycling.
There is one critical fitment caveat: these work only with the power liftgate option. If your Pilot has a manual tailgate, the force profile will be too stiff, and the mounting points may differ slightly. Also, the package does not include the plastic trim clips that sometimes break during removal of the old struts.
What works
- Direct fit for Honda Pilot power liftgate models
- One-year unlimited-mileage warranty
- Corrosion-resistant rod finish
What doesn’t
- Incompatible with manual tailgate Pilots
- No spare trim clips included
5. TadaMark 4860 (Set of 2)
The TadaMark 4860 set is the go-to solution for fourth-generation F-body owners — Chevrolet Camaro and Pontiac Firebird models from 1993 to 2002. The struts have an extended length of 29.21 inches and a compressed length of 23.07 inches, dimensions specifically chosen to handle the long, heavy glass hatchback that these cars are famous for. The metal construction includes a black rubber boot that protects the piston rod from dirt and debris, which is essential for a hatchback that sees exposure to road grime.
Installing these on a 1998–2002 Trans Am or Camaro SS takes negligible effort — pop off the old ball socket clip with a flat-head screwdriver, press the new strut onto the ball stud, and reinstall the clip. Owners note the lift force is strong enough to raise the hatch fully without manual assistance, and the damping rate prevents the hatch from slamming open. The rubber boots are a welcome addition that factory struts often lack.
The fitment is limited strictly to 1993–2002 F-body cars. Attempting to use these on a different GM platform will result in incorrect length and force. Also, some owners experienced the rubber boots sliding down the strut body over time; a small dab of adhesive on the boot collar solves this.
What works
- Designed for the long F-body hatchback glass
- Rubber boots protect piston rod
- Easy installation with standard clip removal
What doesn’t
- Fits only 1993–2002 Camaro and Firebird
- Rubber boots may shift without adhesive
6. A-Premium APGS0146PC (Set of 2)
The Dodge Challenger’s trunk lid is relatively small and light, but the factory struts often weaken after eight to ten years, causing the lid to drop suddenly. The A-Premium APGS0146PC set is built for 2008–2021 Challenger coupes with a spoiler, with a short extended length of just 7.63 inches and a compressed length of 7.01 inches. The fit is exact, and the alloy steel construction with a leak-proof piston seal ensures consistent performance in both hot summer and freezing winter conditions.
Challenger owners, including those with 2013 RT and 2021 RT Shaker trims, consistently report that these struts feel sturdier than the factory units. The motion is quiet — no groaning or squeaking — and the lid rises fully with a light push. The one-year warranty from A-Premium provides the same coverage as their larger SUV struts. Installation is simple: remove the old struts with a clip tool or small screwdriver and snap the new ones into place.
The specific spoiler requirement is important — Challengers without a spoiler have a slightly different trunk lid mass balance. Owners of non-spoiler cars may find the lid pops up too aggressively. Additionally, the compressed length is very short, so these struts are not suitable for any application outside the Challenger trunk.
What works
- Precise drop-in fit for Challenger with spoiler
- Quiet, smooth hydraulic action
- One-year unlimited-mileage warranty
What doesn’t
- Not recommended for non-spoiler Challengers
- No use outside this specific application
7. Euplokeer GSNI-5300-40 (Set of 2)
The 20-inch Euplokeer GSNI-5300-40 struts are designed for applications that require a longer extended length, such as RV basement doors, truck topper windows, and lightweight boat hatches. Each strut provides 40 lb of force, ideal for lids that are lighter and need a gentler lift — think a camper shell side window or a wooden food truck serving hatch. The set includes L-brackets and flat-bottomed brackets plus 16 screws, making it a complete DIY kit for wood or metal framing.
The 20-inch extended length gives you plenty of clearance for deep storage compartments. The gas spring mechanism runs smoothly and is noticeably quieter than the budget end of the market. Owners have used these on a Western golf cart boot and a travel trailer queen bed platform with consistent results. The 15-month exchange warranty from Euplokeer is a strong indicator of confidence in the product’s seal longevity.
At 40 lb per strut, this set is not designed for heavy applications. A fiberglass camper top or a steel lid will overpower these struts quickly. Also, the 20-inch length may be too long for shallow compartments — measure your mounting distance carefully before purchasing.
What works
- Long 20-inch extension for deep compartments
- Complete bracket and screw kit included
- 15-month exchange warranty
What doesn’t
- 40 lb force too light for heavy lids
- Long length not suitable for shallow mounts
Hardware & Specs Guide
Force Rating — Pounds vs Newtons
Automotive gas struts are rated in pounds (lb) or Newtons (N). A standard trunk lid may use 30–40 lb, while a full-size SUV tailgate often requires 50–70 lb. Heavy camper shells and RV compartments can need 100–150 lb per strut. Multiply the lid weight by 1.2 to account for wind resistance and seal friction, then divide the result by the number of struts.
Ball Socket Diameter
Nearly all modern automotive gas struts use a 10mm nylon or steel ball socket. Some European models use 8mm or 12mm balls. The ball socket must snap securely onto the ball stud. A loose fit will cause the strut to pop off under load. Check your existing strut end fitting before ordering a replacement.
Compressed Length and Stroke
The compressed length determines whether the strut fits inside the closed panel. The stroke is the difference between extended and compressed lengths. When the lid is closed, the strut must not bottom out — if the compressed length is too long, the strut cannot fully retract, preventing the lid from sealing properly.
Gas Charging vs Hydraulic Damping
Most automotive struts are nitrogen-charged, providing consistent lift force across a wide temperature range. Some premium struts include hydraulic damping at the end of the stroke to prevent the lid from slamming open or snapping shut. Look for struts labeled “hydraulic end damping” for quieter, more controlled operation, especially on large hatches.
FAQ
How do I measure the force rating of my old gas strut?
Can I use a universal gas strut on my car instead of a vehicle-specific one?
Why does my new gas strut hiss when I extend it?
How long should automotive gas struts last before needing replacement?
Final Thoughts: The Verdict
For most buyers, the best automotive gas struts winner is the SUSPA C16-04270 because the 47 lb force, high-quality seal, and proven 14-year lifespan make it a reliable choice for a wide range of hatch, tailgate, and camper shell applications. If you need a universal DIY kit with included mounting brackets for an RV or boat project, grab the Euplokeer GSNI-5150-50. And for vehicle owners seeking an exact factory-fit replacement, nothing beats the precision-matched AiYiGu PM3074 L-R for Subaru, the A-Premium APGS0207MF for Honda Pilot, or the TadaMark 4860 for Camaro and Firebird.
Certification: BSc in Mechanical Engineering
Education: Mechanical engineer
Lives In: 539 W Commerce St, Dallas, TX 75208, USA
Md Amir is an auto mechanic student and writer with over half a decade of experience in the automotive field. He has worked with top automotive brands such as Lexus, Quantum, and also owns two automotive blogs autocarneed.com and taxiwiz.com.