30 in Gas Struts 100lb Lift Supports for Heavy Lids - Smooth Assist

Our review of these 30 in gas struts finds them to be a practical option for anyone who needs reliable lift support for heavy lids and hatches. Designed to lift approximately 105-135 lb lids, the set makes opening and holding RV bed storage, travel trailer compartments, boat hatches, and basement trap doors noticeably easier. The single biggest reason to buy is the combination of a 100 lb/445N force rating with a 30 in extended length, which delivers smooth, controlled motion for medium to large lids when the fit is correct.

Key Features

• 100 lb force: Provides enough push to lift and hold heavy lids up to the specified 105-135 lb range for most RV and trailer applications.
• 30 in extended length: Gives a long reach and greater leverage for wide lids and hatch applications while compressing down to 17 in for storage.
• L-type mounting brackets: The included brackets are rotatable and the ball ends are removable to accommodate a variety of mounting angles and orientations.
• Durable construction: High-strength steel bodies are built to withstand regular use in indoor and outdoor settings for longer service life.
• Complete pair package: Ships as a pair with four thickened brackets and M8 nuts plus fitting instructions to simplify most installations.

Who It's For

This kit is best for RV owners, travel trailer and boat owners, or anyone replacing or upgrading lift supports on heavy storage lids and hatches that measure well for a 30 in extended strut and fall in the 105-135 lb lid range. It is a sensible choice when a controlled, smooth lift and a rotatable L-type bracket are needed.

Those who should look elsewhere include buyers who require lift supports for very light lids under 100 lb or for lids outside the specified length range; also consider different force ratings or a custom-fit strut if exact compression or mounting dimensions are critical, since some customers reported mixed results on compression and fit.

Pros & Cons

Pros

• Well built with high-strength steel for longer service life in indoor and outdoor use.
• Delivers smooth, controlled operation when properly matched to lid weight and size.
• L-type brackets and ball ends can be rotated or removed for flexible installation options.
• Package includes two struts and four brackets plus nuts and instructions for a complete swap.

Cons

• Some customers reported mixed results with mounting accuracy and strut compression, so careful measurement is required before purchase.
• Screws for mounting are not included, which means an extra trip to get the correct fasteners.

Specifications

Extended Length	30 in
Compressed Length	17 in
Force	100 lb / 445 N
Suggested Lid Weight	Fits approximately 105-135 lb lids (45-60 in)
Quantity	2 struts (1 pair) with 4 brackets and 4 M8 nuts
Bracket Style	L-type rotatable brackets with ball ends

Our Verdict

These 30 in gas struts are a good value for installers who need reliable lift support for medium to heavy lids and hatches; they pair a practical 100 lb force with flexible L-type brackets and durable steel construction. Buyers must measure carefully and supply their own mounting screws, but for the right application this kit provides smooth operation and solid build quality without unnecessary extras.

Frequently Asked Questions

Will these struts hold a 120 lb lid?
Yes, the 100 lb/445 N force rating is intended to support lids in the 105-135 lb range when the lid dimensions and mounting points are appropriate.

Are mounting screws included?
No, screws are not included; the package contains brackets and M8 nuts but fasteners for your mounting surface must be purchased separately.

Can the brackets be adjusted for different angles?
Yes, the L-type brackets and ball ends can be unscrewed and rotated to fit various installation requirements and angles.