Undercover · Clearance
UnderCover 99-19 Silverado / Sierra Limited/Legacy 5.5ft Triad Bed Cover
MPN TR16018 · Store SKU undTR16018
Supplier stock checked 11/7/2026, 6:14:02 AM UTC. Adding a part does not reserve it.
Clearance and scratch-and-dent parts are final sale. No returns or refunds.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
The TRIAD by UnderCover is a hard-folding truck bed cover featuring matte black panels for a sleek and innovative addition to your truck bed. Integrated perimeter seals protect your truck bed from the elements, while aluminum panels enhance the security of your truck bed and support up to 600 lbs of evenly distributed weight. The TRIAD has 2 available riding positions in the fully closed and 2/3 open position for convenience to haul and manage most any cargo. The TRIAD is fashioned with easy-to-use tailgate clamps allowing quick access to the truck bed. The TRIAD hard-folding cover comes completely assembled to provide a quick and easy installation and backed by a 3-year warranty. UnderCover Triad 1999-2018 (2019 Legacy/Limited) Chevrolet Silverado/GMC Sierra 5ft. 9in. Bed (1999-2013 models must remove factory tailgate spoiler and replace with form fitting tailgate cap) UnderCover Triad 1999-2018 (2019 Legacy/Limited) Chevrolet Silverado/GMC Sierra 5' 9" Bed (1999-2013 models must remove factory tailgate spoiler and replace with form fitting tailgate cap) Triad 99-18 (19 Leg/Lim) Silv/Sierra 5'9" (99-13 w/out Factory Tailgate Spoiler) Triad 99-18 (19 Leg/Lim) Silv/Sierra 5ft.9in. (99-13 w/out Factory Tailgate Spoi
Manufacturer fitment & guides
Check TR16018 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y
- Clearance item. All sales are final under the supplier clearance policy.
