Worksport AL4 Hard Flip Up Tri-Fold Cover

The AL4 full bed access low-profile hard trifold tonneau cover is designed with our customers in mind, this hard truck bed cover showcases the best of American engineering and craftsmanship. The AL4 is made using high-quality material that is more than 90% sourced in America and uses ultra-thick formed aluminum that provides superior dent resistance compared to other hard covers. The Worksport AL4 fits seamlessly with a wide range of makes and models and can be installed in under 10 minutes, thanks to our easy-to-use brackets that don’t extend the length of the truck bed. Demonstrating Worksport's commitment to environmental responsibility, we’ve designed the AL4 to be more than 95% recyclable. We‘re able to achieve this because Worksport hard covers are made using minimal plastic and rubber components making them an eco-conscious tonneau cover choice cover that doesn’t sacrificing durability or style.

Key Features

• Heavy-duty aluminum panels: Up to 4× thicker than typical covers for greater dent and impact resistance. 

• DiamondShield™ ceramic finish: Scratch-, UV-, and corrosion-resistant, preserving its appearance.

• Flip-up tri-fold design: One-hand cable latches allow quick partial or full bed access without cover removal.

• Robust EPDM seals + foam corner caps: Triple-seal system keeps water, dust, and debris out. 

• Four sliding crossmember latch points: Ensures tight, secure closure for added theft deterrence.

• Supports up to 400 lb evenly distributed weight, allowing cargo or light gear on top.

• No-drill installation: In under 45 minutes, clamps attached to bed walls install the cover—no bed modification. 

• Made in the USA: Over 90% domestic content, >95% recyclable, with zinc-nickel hardware. 

• 3-year warranty + lifetime support, reflecting confidence in materials and craftsmanship. 

Installation

1. Unbox the cover along with brackets, clamps, hardware, and instructions.

2. Position clamp brackets on bed rails—no drilling, bed rails remain intact.

3. Set the cover onto clamps, tighten per kit instructions.

4. Adjust latches and seals for even contact.

5. Time to install: Under 45 minutes (some professional installers report just 10 min).

Care & Maintenance

• Wash regularly using mild automotive soap and water; avoid abrasive cleaners. 

• Protect the finish with a UV sealant like 303 Aerospace Protectant. 

• Clean and inspect seals periodically; soap & water works well.

• Lubricate latches occasionally with silicone spray for smooth operation.

• Check clamps after rough roads or high vibration—re-tighten if necessary.