st270edi-45 27 Inch 45lb 200N Gas Struts Spring Shocks Lift

The AUCLIDIS ST270EDI-45 is a pair of 27-inch, 45 lb (200 N) gas struts designed to replace worn lift supports on tonneau covers, truck toppers, and pickup bed shells.

These replacement gas shocks restore controlled opening and support for pickup truck undercover tops, tonneau shells, and toppers. Built with nylon 10mm ball-socket connections on both ends, a 27.00" extended length and 15.20" compressed length, and a rated force of 45 lb (200 N), the pair is offered with an installation guide and AUCLIDIS customer support including a 12-month replacement guarantee. Confirm fit by checking the OEM or interchange part number stamped on your existing struts before ordering.

How do I verify these gas struts will fit my tonneau cover?

Measure your current struts from ball center to ball center when fully extended and compressed, and compare the force rating. Also match the ball-socket size and any OEM or interchange numbers on the cylinder to ensure compatibility.

• Extended length: 27.00 inch (ball center to ball center)
• Compressed length: 15.20 inch (ball center to ball center)
• Ball socket diameter: 10 mm (shaft and body)
• Force rating: 45 lb / 200 N
• Check stamped interchange numbers like ST270P45EZ10, st270edi2-45, ML26-45

What do I need to know about installation and mounting?

Installation is straightforward for most tonneau covers: the struts use standard 10 mm nylon ball sockets that snap onto existing ball studs. Some kits may require removal of interior panels or access to mounting points—follow the included guide for safe, correct attachment.

• Package contains two gas struts and an installation guide
• Snap-on nylon ball sockets attach to 10 mm ball studs—no special tools for the sockets
• Install with cover supported; attach compressed or extended depending on manufacturer instructions
• Test opening and closing slowly to ensure proper alignment and smooth operation

What performance and durability features should I expect?

These struts provide steady lift and hold for tonneau covers, reducing slamming and helping with controlled opening. The nylon sockets resist corrosion and the specified 45 lb force suits medium-weight shells; however, longevity depends on operating conditions and exposure to weather.

• Consistent 200 N force for reliable support during use
• Nylon 10 mm sockets minimize metal-to-metal corrosion at attachment points
• Manufactured to match common OEM interchange numbers for broad compatibility
• 12-month replacement guarantee and customer support from AUCLIDIS

How do I choose between a single strut or a matched pair?

Tonneau covers and toppers normally use one strut per hinge point; replacing both at the same time ensures balanced lift and even wear. Buying the set of two is recommended if both supports are the same length and force rating.

• Set of 2 ensures symmetrical performance on both sides
• Replace both if the other strut shows wear, leakage, or reduced force
• Keep interchange numbers identical for matched operation

Who is this for: This pair of AUCLIDIS ST270EDI-45 gas struts is intended for pickup owners, mechanics, and DIYers who need to replace tired or broken lift supports on tonneau covers, truck toppers, or bed shells. If your current hardware matches the 27"/15.2" measurements, 10 mm ball-socket fittings, and ~45 lb (200 N) force rating—especially when the OEM or interchange numbers align—this set offers a direct, cost-effective replacement with installation guidance and a 12-month guarantee.