For truck owners seeking reliable hydraulic lift supports, choosing the right gas struts and shock absorbers can improve lid, bed, and hatch performance. Below is a curated list of five high-performing options, spanning heavy-duty truck beds, tool boxes, campers, and RV compartments. Each entry highlights compatibility, force, length, and notable features to help you compare at a glance.
| Product | Brand | Approx. Force | Length (Extended / Compressed) |
|---|---|---|---|
| Dukuge 20 Inch Gas Struts (Set of 2) | Dukuge | 200 lbs per strut | 19.7″/11.8″ |
| A-Premium Rear Suspension Shock Absorber | A-Premium | — | — |
| ML9945 10 Inch 45Lbs / 200N (2 pcs) | TadaMark | 45 lbs per strut | 9.64″/6.1″ |
| Gabriel Fleetline Heavy Duty Rear Shock | Gabriel | — | — |
| AiYiGu 20 Inch 100Lbs / 445N | AiYiGu | 100 lbs per strut | 20″/12.13″ |
Note: The selections emphasize compatibility with truck beds, tool boxes, campers, RV compartments, and similar applications where hydraulic lift supports improve operation and durability. Each listed item includes product-specific data such as extended/compressed lengths and force that align with typical truck accessories.
Dukuge 20 Inch Gas Struts — Heavy Duty (Set of 2)
The Dukuge gas struts are engineered for heavy-duty truck applications, including tonneau covers, RV beds, trap doors, and large cabinet lids. Each strut extends to about 19.7 inches and compresses to 11.8 inches, delivering up to 200 pounds of lift per strut. They have undergone extensive testing, including more than 30 procedures and 18,000 compression cycles, with tolerance for high-temperature and cold environments. This makes them suitable for outdoor use and challenging installations where reliable lift is essential. The package includes two struts, designed to replace standard DIY or OEM components in high-load lids.
Key features:
– Extended length: 19.7 inches; compressed: 11.8 inches; force: 200 lbs per strut
– Versatile for truck beds, RVs, camper shells, tool lids, and similar lids
– Rigorous testing for consistent performance across temperature ranges
– Two-strut set simplifies installation and balance
A-Premium Rear Suspension Shock Absorber
A-Premium’s rear suspension shock absorber is designed for a broad range of heavy-duty applications, including Freightliner M2, Western Star, and Thomas school buses equipped with FAS II air suspensions. The unit is intended to replace OE shocks and restore ride stability under demanding loads. It supports compatibility across multiple model years and fitments, reflecting a focus on commercial fleets and long-term durability. This option is best for operators seeking OE-style performance with a broad vehicle footprint.
Key considerations:
– Broad vehicle compatibility across Class 6-8 trucks and buses
– Emphasis on restoring ride stability under heavy loads
– Compatible with a range of Freightliner, Western Star, and Thomas models
– Suitable for fleet maintenance and replacements where OEM-style performance matters
ML9945 10 Inch 45Lbs Gas Strut (2 Pack)
The ML9945 set from TadaMark provides 10-inch gas struts with 45 pounds of lift per strut, ideal for lids, tool boxes, RV overhead compartments, and small to mid-weight doors. Each unit measures an extended length around 9.64 inches and a compressed length near 6.1 inches, offering a compact yet robust lift solution. This package includes two struts and mounting hardware, making it a straightforward upgrade for lighter-weight lids or smaller compartments that still demand reliable hydraulic assistance.
Key considerations:
– Force: 45 lbs per strut; suitable for lids weighing roughly 35–50 pounds with two struts
– Compact profile for smaller compartments and tool boxes
– Easy installation with included mounting hardware
– Good balance of strength and size for mid-range applications
Gabriel Fleetline Heavy Duty Rear Shock Absorber
Gabriel Fleetline shocks deliver durable rear suspension performance for a wide range of Class 6-8 commercial vehicles, including Mack, Western Star, and various Freightliner models. The Fleetline design emphasizes a twin-tube construction that endures demanding road conditions while maintaining ride stability under high-load operations. It is positioned as a reliable OE-style option for fleets seeking consistent handling, fixture compatibility, and long service life across heavy-duty routes.
Key considerations:
– Broad compatibility with heavy-duty trucks and buses
– Twin-tube construction engineered for high-load stability
– OE-style performance suitable for fleet applications
– Interchangeable with multiple OE and aftermarket shock part numbers
AiYiGu 20 Inch 100Lbs / 445N Gas Shock Strut
The AiYiGu 20-inch gas shock struts provide robust lift for heavier lids such as RV compartments, truck canopies, and tool boxes. Each shock delivers 100 pounds of lift, with an extended length of about 20 inches and a compressed length around 12.13 inches. The package includes two struts along with mounting brackets and screws, enabling straightforward DIY installation. These are well-suited for mid-to-heavy lids that require steady, reliable support in variable conditions.
Key features:
– Force: 100 lbs per strut; extended ~20″, compressed ~12.13″
– Includes mounting hardware for easy installation
– Suitable for heavy lids—RV beds, truck caps, tool boxes
– Durable construction for frequent use
AiYiGu 12 Inch 24Lbs / 107N Gas Strut
This AiYiGu option provides a lighter-duty alternative with 24 pounds of lift per strut, suitable for smaller lids such as tool boxes, camper shells, and rear windows. It measures about 12 inches extended and 8.2 inches compressed, making it a compact choice for limited spaces. Includes two struts and simple mounting hardware, designed for straightforward, screwdriver-based installation.
Key considerations:
– Force: 24 lbs per strut; compact profile for smaller lids
– Practical for lightweight lids and cabinet doors
– Includes mounting hardware for quick setup
– Suitable for applications with tight space constraints
17″ 28Lbs / 127N Gas Spring for Truck Toppers
This 17-inch gas spring offers a moderate lift of 28 pounds per strut, suitable for camper toppers, Leer shells, and truck caps. Extended length is about 17.1 inches, with a compressed length of around 10.8 inches. The set typically includes two struts and is aimed at users who need stronger support than light-duty options but not the highest-load capacity. It suits lids and doors in mid-weight applications and can be a good match for specific truck canopy configurations.
Key considerations:
– Force: 28 lbs per strut; suitable for mid-weight lids
– Balanced length for common truck toppers
– Includes two struts; straightforward installation
– Versatile for camper shells and truck cap doors
Buying Guide: Key Purchase Considerations
When selecting hydraulic suspension components for trucks, consider the following factors to ensure a good fit and durable performance:
- Load rating: Match the total lid weight with the combined lift of all installed struts. If two struts are used, ensure the combined lift accommodates the lid while leaving a margin for smooth operation.
- Extended and compressed lengths: Measure your mounting points to avoid interference with hinges, handles, or adjacent components. Shorter lids may require compact struts, while larger lids benefit from longer travel.
- Installation hardware: Some sets include brackets and screws; verify compatibility with your mounting surfaces and ensure corrosion-resistant fasteners for outdoor installations.
- Temperature tolerance: Outdoor and extreme-temperature environments can affect performance. Look for products tested across a range of temperatures if you operate in harsh climates.
- Vehicle compatibility: For automotive shocks (like freight and bus applications), confirm the exact OEM fitment and model compatibility to prevent misfit and warranty issues.
- Longevity and testing: Units with documented testing (compression cycles, endurance, and temperature tests) tend to offer more consistent performance over time.
- Installation complexity: Some products are straightforward to install with common tools, while others may require brackets or precise mounting alignment. Consider DIY readiness and available assistance.
- Maintenance: Inspect seals for leaks and check mounting hardware for wear. Replace in pairs when distributing load evenly to prevent uneven wear.
Overall, the best hydraulic suspension choice depends on your lid weight, mounting space, and whether you need heavy-duty or mid-range support. The Dukuge and AiYiGu lines provide strong options for heavier lids, while the ML9945 and AiYiGu 12 Inch variants suit smaller or lighter applications. For fleets or heavy commercial use, the A-Premium and Gabriel entries offer OEM-like reliability across broader vehicle families.