For pickup drivers who want to maximize cargo protection, weather resistance, and versatility, fiberglass caps and compatible gas struts are a smart upgrade. This article highlights five top options that pair well with fiberglass truck caps and camper shells, including direct-fit gas springs, universal racks for top panels, and replacement hardware. Each pick is evaluated on durability, compatibility, and installation practicality to help you choose confidently for American trucks and everyday use.
Summary of selected products
- PAMAGOO C16-08941 C1608941 16 inch Gas Strut (2 Pack) – 28 lb lift per strut
- Euplokeer 20 inch Gas Strut (2 Pack) – 100 lb lift, versatile replacements
- AA-Racks DX36 Universal Truck Cap & Topper 3 Bar Ladder Roof System – Matte White
- Truck Upfitters 20 Inch Gas Struts (2 Pack) – 100 lb lift for fiberglass beds
- ARE T-Handle and Accessories for Camper Shell Doors – Replacement hardware
PAMAGOO 16 Inch Gas Struts — 2 Pack
- Brand: PAMAGOO
- Model notes: Extended length 15.71″, Compressed 9.41″, 28 Lb (125 N) per strut
- Package: 2 x 16 inch gas struts, installation guide
- OEM numbers: C1608941, C16-08941, SE150P30M10
- Compatibility: Fits 16″ truck topper windows and rear hatches with proper mounting
These PAMAGOO gas struts are designed to lift guard doors and camper shell windows smoothly, reducing manual effort when accessing cargo. The dual-pack ensures balanced lifting for fiberglass toppers, while the included installation guide helps DIY installers complete the job in minutes. The struts provide a moderate lift suitable for many fiberglass cap configurations and are a solid option for daily use in American pickups.
Euplokeer 20 Inch Gas Strut — 100 Lb (2 Pack)
- Brand: Euplokeer
- Strength: 100 lb lift per strut, 2-pack
- Applications: Replacement for fiberglass tonneau covers, camper shell windows, RV beds, and more
- Compatibility notes: Interchanges with multiple part numbers; verify cylinder part numbers against original hardware
- Other uses: Suitable for DIY projects such as food trucks, wooden boxes, or shed windows that require reliable gas lift supports
The Euplokeer set emphasizes direct replacement capability and broad compatibility with various 20″ struts. The higher lift rating makes them suitable for heavier cap configurations or taller windows. Users should confirm mounting brackets and ball stud mounting hardware to ensure a secure fit for their fiberglass topper. This pair offers strong performance for frequent lifting tasks and can support sustained daily use on a pickup truck cap.
AA-Racks DX36 Universal Cap & Topper (Matte White)
- Brand: AA-Racks
- Design: 3-bar ladder roof rack system for toppers and camper shells
- Material: 17 gauge steel; cross bars 1.2″ diameter
- Capacity: Up to 350 lb loading; length adjustable 35″ to 57″
- Finish: Matte White for a clean, integrated look with fiberglass caps
The AA-Racks DX36 system provides a versatile ladder-style roof rack option for fiberglass toppers, enabling extra cargo carrying capacity without compromising the cap’s integrity. While installation requires drilling, the robust steel construction delivers reliable support for gear like kayaks, ladders, or heavy totes. It’s a practical upgrade for owners who want additional storage while maintaining the aesthetic and protection of a fiberglass cap.
Truck Upfitters 20 Inch Gas Struts — 100 Lb
- Brand: Truck Upfitters
- Length and lift: 20 inches, 100 lb lift per strut
- Intended use: Fiberglass tonneau covers, camper shell beds, and replacement parts
- Note: Measure lengths and pressure before ordering; compatibility varies with ARE fiberglass tonneau models
- Installation: Requires checking precise mounting points and ball joint alignment
These Truck Upfitters gas struts emphasize high lift and broad applicability for fiberglass tonneau covers and camper shell beds. They are presented as a flexible replacement option to restore or enhance the lifting action of a cap door or window. As with all higher-lift struts, careful mounting and alignment are essential to avoid undue stress on the cap hardware and to ensure smooth operation over time.
ARE T-Handle Replacement Kit
- Brand: ARE
- Function: T-handle for ARE camper shell rear doors with two keys included
- Compatibility: Fits ARE camper shells across V, CX, TW, MX, and Overland series with one T-handle
- Installation: Holes spaced 1.5″ from center to center; straightforward replacement
- Material: Durable nylon; in-stock availability
The ARE T-Handle replacement kit focuses on securing reliable access through camper shell rear doors. While not a lift component itself, this accessory complements fiberglass caps by ensuring secure, easy entry and exit. This upgrade is particularly relevant for owners who frequently access cargo and need dependable hardware that resists wear over time on rugged road conditions.
ESI Premium Cap Seal XL
- Brand: ESI
- Length: 23 ft; width 2″, height .200″
- Application: EPDM rubber cap seal for 200 lbs or less cap weight
- Materials: 21 PCF density EPDM; superior compression set resistance
- Function: Fills gaps and reduces vibration for a snug, weather-tight fit
The ESI Premium Cap Seal XL is designed to seal gaps around truck caps and camper shells, helping prevent dust, water, and wind intrusion. Its EPDM composition offers long-term resilience with good compression set resistance. This accessory is a practical upgrade for fiberglass toppers in variable climates, contributing to a quieter and drier interior during travel and camping trips.
AA-Racks DX36 Universal Cap & Topper (Sandy Black)
- Brand: AA-Racks
- Finish: Sandy Black; construction mirrors Matte White version with the same dimensions
- Capacity: 350 lb max; compatible with toppers requiring drilling for installation
- Cross bars: 1.2″ diameter; length adjustable 35″ to 57″
- Usage: Extends cargo capacity and versatility for fiberglass caps
This Sandy Black variant of the AA-Racks DX36 offers the same rugged capability as the matte white version, delivering a sturdy ladder rack framework for fiberglass toppers. While installation involves drilling, the kit enables secure mounting for additional gear along the truck bed. It’s a practical choice for outdoor enthusiasts who need reliable, long-lasting roof-access options without compromising a capped payload.
Buying Guide: Key Purchase Considerations
- Cap compatibility: Confirm the fiberglass topper’s mounting points, bolt pattern, and weight to choose gas struts with appropriate length and lift. Misfit components can cause binding or damage over time.
- Lift strength: For lighter windows or doors, 28 lb per strut may suffice; heavier caps or taller hatches may require 100 lb or more. Use dual struts for balanced loading on larger doors.
- Material and finish: Steel ladder racks should resist corrosion and match your truck’s aesthetic. Powder-coated finishes (Matte White or Sandy Black) help with durability and appearance.
- Installation ease: Some components include installation guides; others require drilling or brackets. DIY installers should check tools needed and whether brackets are included.
- Versatility: If you own multiple fiberglass caps or DIY projects, consider universal racks and adaptable gas struts that work across models, reducing the need for multiple replacements.
- Durability and warranty: Look for parts designed for automotive use and brands with documented support or installation resources to sustain performance after years of use.
- Weather and climate considerations: EPDM seals and gas struts should withstand humidity, heat, and temperature cycles common in American climates to prevent failure.
Additional Considerations For Vehicle Upfits
Fiberglass truck caps are valued for their light weight, durability, and weather sealing. When upgrading with gas struts or racks, ensure that added hardware does not interfere with window operation, door alignment, or internal storage access. Correct alignment reduces wear and keeps lifts smooth over the cap’s service life. For owners handling heavy loads, prioritize higher-lift struts and reinforced mounting points to distribute weight evenly and protect the cap’s hinges and supports.
In summary, the featured options provide a balance of compatibility, performance, and installability for fiberglass pickup truck caps and toppers. Whether you opt for direct-fit gas struts from PAMAGOO and Euplokeer, universal ladder racks from AA-Racks, or replacement hardware from ARE, the right combination will improve access, security, and cargo handling on your truck. Use the buying guide as a checklist to compare fit, strength, and durability before purchasing.