Gas springs are essential for lifting and supporting heavy lids, doors, and compartments on trailers, RVs, and workboxes. The right gas struts provide smooth, controlled motion, reduce strain on hinges, and prevent slam injuries. This guide highlights top-rated options designed for trailers and heavy-duty lids, with real-world applicability for RV doors, tonneau covers, tool boxes, and cap doors. Each product below is selected for reliability, appropriate force ratings, and compatibility with common mounting patterns.
| Product | Brand | Extended Length | Force (per strut) | Typical Use |
|---|---|---|---|---|
| ARANA 125719 Gas Struts | ARANA | 19.7 in | 15 lb | RV doors, camper doors, storage lids |
| ARANA SF280M400 | ARANA | 28 in | 400 lb | Heavy trailer lids, sled trailers, cap doors |
| AUCLIDIS 20 Inch Gas Strut | AUCLIDIS | 19.69 in | 200 lb | King/queen beds, trailer caps, tonneau covers |
| PAMAGOO 20 Inch 200 lb Set | PAMAGOO | 20.04 in | 200 lb | Heavy lids, RV beds, toolbox doors |
| Vepagoo 42 Inch 200 lb | Vepagoo | 42 in | 200 lb | Heavy lids, tonneau covers, trailer doors |
Choosing the right gas strut involves matching the lid weight, desired lift, and installation space. The following sections present five top picks commonly used on trailers and heavy lids, with technical notes to help you decide which fits your setup best.
ARANA 125719 Gas Struts For RV Doors
These 20-inch gas struts deliver 15 pounds of force per shock, making them suitable for lighter-to-moderate lids such as RV entry doors, cabinet lids, and storage compartments. The pair is designed for versatility with multiple OEM numbers, including SX200P1-11-DC variants, broadening compatibility with common RV and trailer models. Extended length is 19.7 inches and a compressed length of 11.8 inches, ensuring adequate clearance in standard mounting locations. Use cases include RV doors, camper doors, and trailer storage lids where smooth lifting is desired.
ARANA SF280M400 28-Inch Heavy-Duty Gas Struts
Designed for heavy-duty applications, these 28-inch gas struts are rated at 400 pounds per pair, making them ideal for heavy trailer lids, sled trailers, and large cap doors. They accommodate heavier lid weights (360–440 pounds range is indicated for suitable use) and require careful measurement of lid weight and mounting clearances. The loaned long extension provides substantial lift for bulky lids, helping operators raise closed lids with ease while maintaining control to prevent accidental drops.
AUCLIDIS 20-Inch Gas Strut For Heavy Applications
With an extended length near 19.69 inches and a force of 200 lb per strut, this pair is tailored for heavier cabinet doors, tonneau covers, and large floor hatches. It emphasizes correct sizing: lids between 170–220 pounds are best matched to these struts. Installation guidance and accuracy in measurement are critical to ensuring safe, balanced lifting and smooth lowering.
PAMAGOO 20-Inch 200 lb Gas Strut Set
These 20-inch, 200-pound gas struts are positioned for heavy lids such as RV beds, toolbox lids, and trailer doors. The product notes emphasize an installation process with helpful videos to guide user setup and ensure the door or window lifts smoothly. The extended and compressed lengths are 20.04 inches and 12.13 inches respectively, and the pair can support lid weights within the 170–215 pound range for reliable operation.
Vepagoo 42-Inch Heavy-Duty Gas Struts
For particularly long lids, such as tonneau covers or large trailer caps, Vepagoo offers 42-inch gas struts rated at 200 lb per strut. The product notes include guidance on matching strut length to lid length (aiming for roughly half to two-thirds of the lid length) and using the 13 mm ball joints with a 10 mm screw thread. These struts are designed for multi-scene use, including heavy-duty lids, outdoor cabinets, and trailer doors requiring strong, controlled support.
Buying Guide: Key Considerations For Gas Struts On Trailers
When selecting gas struts for trailers, several factors influence performance and safety. The following considerations help compare options across brands and models:
- Weight compatibility: Match the total lid or door weight to the combined force of the pair of struts. Common ranges include 200 lb per pair for mid-weight lids to 400 lb per pair for heavy lids. Underestimating force can cause slow lifting or premature failure; overestimating can create stiff operation or mounting stress.
- Length and mounting space: Extended length and compressed length determine whether the struts fit your hinge layout. Longer struts provide more lift but require adequate clearance when closed. Measure lid length and ensure mounting points align with the strut ends.
- End connections: Most struts use ball joints (sockets) and mounting studs. Confirm thread sizes (e.g., 10 mm) and ball joint compatibility with your hinges or brackets to avoid mismatches.
- Durability and environment: Trailer use often exposes struts to dust, moisture, and temperature fluctuations. Look for corrosion-resistant bodies and reputable brands with robust springs for long service life.
- Installation resources: Some products offer installation videos and online support, which can significantly speed up setup and reduce errors. This is especially helpful for DIY projects on trailers and RVs.
- Symmetry and pairing: Use matching struts on both sides of a lid to ensure balanced lifting and stable operation. Avoid mixing different force ratings on the same lid unless designed to do so.
- OEM compatibility: If replacing an existing component, verify OEM numbers and fitment lists to prevent incorrect purchases. Many ARANA and PAMAGOO models include multiple compatible OEM numbers for broader matching.
- Application scope: Consider whether you need strain on doors, cabinets, tool boxes, tonneau covers, or heavy lids. Some models emphasize heavy-duty truck, sled trailer, or RV applications, while others are better suited to mid-weight cabinet doors.
Comparative Snapshot
- Best for light-to-mid-weight doors: ARANA 125719 (15 lb per shock) offers reliable lifting for RV and camper doors without excessive stiffness.
- Best for heavy lids: ARANA SF280M400 (400 lb per pair) handles heavy trailer lids and cap doors with extended reach.
- Balanced option for heavy caps and tonneau covers: PAMAGOO 20 Inch 200 lb pair provides strong lift with broad installation guidance.
- Versatile heavy-duty choice: Vepagoo 42 Inch 200 lb is ideal for long, heavy lids like tonneau covers and large trailer doors.
- Budget-friendly mid-range: AUCLIDIS 20 Inch 200 lb offers solid performance for mid-weight applications with clear sizing specs.
This article presents a snapshot of representative options commonly used in trailer and RV applications. Always verify lid weight, mounting space, and compatible OEM numbers before purchasing. For best results, select a matched pair with identical force ratings and compatible end fittings, and consult installation guides or professional help if uncertain.