Dukuge 12-inch 40 lb Gas Struts, 2-Pack — Direct-Fit Replacement for Camper Shells with Smooth Controlled Lift

These Dukuge C16-11028 gas struts are a 12-inch, 40 lb (178 N) pair engineered to replace worn lift supports on camper shell windows, truck caps, toolbox lids and similar hinged panels.

Designed as a direct-fit replacement for many OEM numbers, the Dukuge 2-pack restores smooth, controlled opening and secure holding for lids that weigh roughly 32–40 pounds. Each cylinder measures 12.20 inches extended and 7.48 inches compressed (hole-to-hole) and uses a 10 mm connector hole plus a 6 mm threaded stud, making them compatible with a wide range of ARE, Leer, SnugTop and other aftermarket caps and accessories.

Will these gas struts fit my camper shell or truck cap?

Compatibility depends on both dimensions and connector types. Compare your existing strut’s extended and compressed hole-to-hole lengths and the connector diameters to ensure a match; the Dukuge C16-11028 measures 12.20" extended, 7.48" compressed, with a 10 mm connector hole and 6 mm thread diameter.

• Extension length: 12.20 inches (hole-to-hole)
• Compression length: 7.48 inches (hole-to-hole)
• Connector hole diameter: 10 mm; threaded stud diameter: 6 mm
• Suitable for lids roughly 32–40 lb (recommended 40 lb / 178 N)

How do these struts change lid movement and safety?

Once installed, the Dukuge struts provide a controlled, assisted lift and hold the lid securely at full extension so it won’t slam shut. Their damping action reduces shock and wear on hinges, and the closure is gradual to protect fingers and contents.

• Smooth, assisted opening to reduce manual effort
• Positive holding force at full extension for safe access
• Slower, gentle closing to minimize impact and damage
• Reduces stress on hinges and mounting points

How simple is installation — do I need special tools?

Installation is quick and requires only basic hand tools. Most users can replace the old strut in minutes: pop off the retaining clips with a screwdriver, remove the old unit, then bolt the Dukuge strut into place using existing mounting points or optional brackets.

• Typical install time: about 3 minutes per strut
• Tools: flat-head screwdriver, wrench or socket for the mounting nut
• Includes a guidebook; additional brackets sold separately
• Works with common quick-release ball-socket mounts or standard bolts

What’s included and when should I consider extra accessories?

The package contains two 12-inch 40 lb gas struts and a concise installation guide. If your vehicle’s original brackets are damaged, missing, or use a different ball/socket dimension, consider purchasing compatible mounting brackets or a full hardware kit to ensure a secure fit.

• Package: 2 x Dukuge C16-11028 gas struts, 1 x guidebook
• Recommended if existing mounts are worn or mismatched: mounting bracket bundle
• OEM interchange references provided for cross-checking part numbers
• Check part numbers like 7009-2PK, 21-0556-06, ML15-40 for compatibility

Who is this for: The Dukuge C16-11028 12" 40 lb gas strut 2-pack is intended for truck owners, RV and camper shell users, and anyone repairing or upgrading toolbox lids and topper windows that require moderate lift assistance. It’s best for applications where the lid weight is within the 32–40 lb range and the original mounting geometry matches the listed connector sizes. If you’re maintaining an ARE, Leer, SnugTop, WeatherGuard or similar accessory and need a quick, reliable replacement that reduces slamming and eases access, these gas struts are a practical, easy-to-install option.