2019 GMC Sierra 5'8" Short Bed Hard Folding Tonneau Cover

Premium Low Profile Aluminum Truck Bed Cover

The GMC Sierra 1500 5'8" Short Bed — Built to Haul. Built to Be Protected.

The GMC Sierra 1500 5'8" Short Bed is the most common bed configuration on the Sierra platform. Owners who spec it want full bed capability without the length of a standard cab truck. If your Sierra is working for you, your bed needs to be protected by something built to the same standard as the truck.

Thunder Armor is designed, engineered, sourced, and manufactured in the United States by Thunderstone Manufacturing. Premium-grade aluminum. Best-in-class low-profile design. Enhanced theft protection with a secure latch design. All-weather protection. No-drill installation. A 5-year limited warranty from an American manufacturer. Fitment confirmed for the 2019 GMC Sierra 1500 5'8" Short Bed. In stock and ready to ship today.

Thunder Armor Features & Benefits

Made in America

Proudly designed, engineered, sourced, and manufactured in the United States. True American craftsmanship in every detail.
Heavy-Duty

Made from premium-grade aluminum, built to last and provide years of reliable protection against the toughest conditions.
Best-in-Class Low-Profile Design

Engineered for a precision fit, Thunder Armor achieves a best-in-class low-profile design that sits virtually flush with your truck bed.
Enhanced Theft Protection

Durable aluminum construction and secure latch design provide reliable defense against theft and unauthorized access.
Weather Resistance

Keep your cargo dry and safe from rain, snow, and extreme temperatures with our robust all-weather design.
Rear View Visibility

A clean, flush look that maintains rear window visibility and maximizes your truck bed's usable space.
Quick & Easy Installation

Install your tonneau cover in just 30 minutes. Minimal tools required.
Instant Availability

In stock and ready to ship today.

Who It's Built For

Designed for Real Truck Owners

Vehicle Fitment

Model	Year	Bed Size
GMC Sierra 1500	2019	5'8" Short Bed (78")

What's Included

Thunder Armor Hard Folding Tonneau Cover
Vehicle Specific Clamp Mounting Hardware
Weather Resistant Perimeter Seal System
Integrated Latch System
Installation Hardware
Detailed Installation Instructions

Our Heritage

The Thunderstone Manufacturing Standard

140+

Years of Manufacturing

Thunder Armor tonneau covers are engineered and manufactured by Thunderstone Manufacturing, a division of Timpte, Inc., a trusted name in trailer manufacturing for over 140 years. Known for building the #1 selling dry-bulk commodity trailer in North America, Timpte brings decades of proven engineering, durability, and American craftsmanship into every Thunder Armor product. This heritage ensures our tonneau covers deliver the same level of strength, reliability, and performance customers have come to expect from the Timpte name.

Benefits of the Thunder Armor Hard Folding Tonneau Cover

01Made in America
02Heavy-Duty
03Best-in-Class Low-Profile Design
04Enhanced Theft Protection
05Weather Resistance
06Rear View Visibility
07Quick & Easy Installation
08Instant Availability

Support

Frequently Asked Questions

Yes. The 5'8" Short Bed is the standard bed configuration across crew cab and double cab Sierra 1500 models. Thunder Armor fits all 2019–2026 configurations with the 5'8" Short Bed.

Spray-in liners add thickness to the bed rail surface and may affect clamp fitment. Contact us before ordering to confirm compatibility with your specific liner.

No. Thunder Armor's low-profile flush fit is specifically designed to maintain rear window visibility while providing full bed coverage.

Thunder Armor also fits the GMC Sierra 1500 6'8" Standard Bed.

Yes. Thunder Armor is in stock and ready to ship today.