2020 RAM 3500 6'5" Hard Folding Truck Bed Cover

Premium Low Profile Aluminum Truck Bed Cover

Premium Aluminum Truck Bed Cover Built for the Second Year of the Fifth Generation RAM 3500

The 2020 RAM 3500 continued the fifth-generation heavy-duty platform with updated technology packages and continued refinement of the available 6.7L Cummins diesel. The 6'5" Standard Bed carried forward the proven fifth-generation rail geometry from the 2019 launch, now backed by one full year of real world validation across demanding commercial, agricultural, and one-ton heavy-duty applications.

The Thunder Armor Hard Folding Tonneau Cover is precision engineered specifically for the 2020 RAM 3500 6'5" Standard Bed on the fifth-generation platform. Designed and manufactured in the USA by Thunderstone Manufacturing, this premium hard aluminum truck bed cover delivers enhanced cargo security, all weather protection, rugged durability, and a sleek low profile appearance built for real world heavy-duty truck use.

Why Choose the Thunder Armor Hard Folding Truck Bed Cover?

• Heavy Duty Aluminum Construction

  Premium grade aluminum panels engineered for the most demanding commercial, agricultural, and one-ton heavy-duty truck use.

• Best in Class Low Profile Design

  Ultra low profile design sits virtually flush with your 2020 RAM 3500 bed rails across the full 6'5" Standard Bed.

• Enhanced Cargo Security

  Secure latch system helps protect valuable tools, equipment, materials, and cargo.

• All Weather Truck Bed Protection

  Weather resistant perimeter seal system helps protect cargo from rain, snow, dust, dirt, and road debris.

• Quick No Drill Installation

  Installs in approximately 30 minutes using a no drill clamp mounting system.

• Full Truck Bed Access

  Folding panel design provides convenient truck bed access for larger cargo and hauling flexibility.

• Proudly Made in the USA

  Designed, engineered, sourced, and manufactured in the United States.

• 5-Year Limited Warranty

  Built for dependable long term performance and backed by one of the strongest warranties in the category.

• Platform Note

  The 2020 RAM 3500 uses fifth-generation bed rail geometry (2019–2026). If you own a 2018 or earlier RAM 3500, see the fourth-generation fitment pages.