Rugged Liner C67U20HD Under-Rail Bedliner
We designed the C67U20HD under-rail bedliner specifically for 2020 and newer Chevrolet Silverado and GMC Sierra trucks with 6’7″ beds. This heavy-duty liner installs beneath your bed rails for a low-profile appearance while delivering maximum cargo protection.
The rugged liner c67u20hd under rail bedliner features premium construction that resists impacts, scratches, and UV damage season after season. Our precision-molded design ensures a perfect fit with integrated drain channels that prevent water pooling and protect your truck’s factory finish.
Key specifications for the C67U20HD
Precision Fit for 2020+ GM Truck Beds
The C67U20HD offers a vehicle-specific fit that standard universal liners simply cannot match. We laser-scan factory bed dimensions to create molds that account for every contour, wheel well, and stake pocket in 2020 and newer Chevrolet Silverado and GMC Sierra models with 6’7″ cargo beds.
Our under-rail design installs beneath the bed rail caps, creating a seamless appearance that looks factory-installed. The liner sits flush against the bed floor and walls without gaps that trap dirt or moisture. Integrated channels along the bed perimeter route water toward the tailgate, preventing pooling that can lead to rust and corrosion.
Heavy-Duty Material Construction
We manufacture the rugged liner c67u20hd under rail bedliner from a proprietary thermoplastic polymer blend engineered for extreme durability. This material absorbs impacts that would dent or crack lesser liners, protecting both the liner itself and your truck bed underneath.
The UV-stabilized formula maintains color and flexibility through years of sun exposure. Unlike spray-in liners that can fade to an uneven finish or drop-in liners that become brittle, this material stays pliable in freezing temperatures and won’t soften in summer heat.
Installation Process and Requirements
Installing the C67U20HD requires no drilling, cutting, or permanent modifications to your truck. The under-rail design utilizes factory mounting points and clips that secure the liner without compromising your vehicle’s structure or warranty.
Most installers complete the process in under two hours using basic hand tools. The liner arrives with detailed instructions and all necessary hardware. You’ll need a socket set, Phillips screwdriver, and a helper to position the liner during initial placement.
More Under-Rail Bed Protection
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Common Questions About the C67U20HD Bedliner
Yes, the C67U20HD is specifically engineered for 2020 and newer Chevrolet Silverado and GMC Sierra models equipped with the 6’7″ (6 feet 7 inches) cargo bed. This includes all trim levels of the Silverado 1500, 2500HD, and 3500HD with that bed length.
The liner accommodates both gas and diesel engines, crew cab and double cab configurations, and works with or without the factory bed step. Measure your bed length from the inside of the bulkhead to the inside of the tailgate to confirm you have the 6’7″ bed before ordering.
No, the rugged liner c67u20hd under rail bedliner installs without drilling any holes in your truck bed. The under-rail design uses factory mounting points and clips that secure the liner to existing attachment locations.
Installation preserves your truck’s structural integrity and factory warranty. All necessary mounting hardware is included, and the process requires only standard hand tools. You can remove the liner in the future without leaving permanent modifications if needed.
Under-rail liners like the C67U20HD install beneath your bed rail caps for a low-profile, integrated appearance. This design sits flush with the bed floor and doesn’t raise the cargo surface or reduce bed depth like traditional drop-in liners.
The under-rail installation also prevents the liner from shifting or rattling during driving. Water drains properly through integrated channels rather than pooling between the liner and bed. You maintain full access to tie-down points and can use tonneau covers without clearance issues that sometimes affect taller drop-in designs.
Yes, the C67U20HD is compatible with fifth-wheel hitches and gooseneck towing systems installed in factory bed locations. The liner material can be trimmed if necessary to accommodate the specific mounting hardware for your towing system.
For B&W turnoverball systems and similar flush-mount gooseneck installations, the liner installs around the mounting point without interfering with operation. If you’re installing a new hitch system, we recommend installing the liner first, then the towing hardware for the cleanest installation.
Yes, the thermoplastic polymer construction handles pressure washing without damage. Use a standard pressure washer at 1500-2000 PSI from a distance of 12-18 inches for routine cleaning.
Avoid using a turbo nozzle directly against the liner surface, as concentrated high-pressure streams can mark any plastic material. The textured surface releases dirt easily with normal pressure washing, and the UV-stabilized material won’t fade or degrade from regular cleaning.
Our lifetime warranty covers the C67U20HD against cracking, warping, and peeling under normal use conditions for as long as you own the vehicle. This includes defects in materials and workmanship that affect the liner’s protective function.
The warranty does not cover damage from accidents, improper installation, or exposure to extreme chemicals beyond normal automotive use. Fading from UV exposure is covered, but minor color variation from extreme climates is considered normal. Contact us with your order information if you experience any warranty-covered issues.
The rugged liner c67u20hd under rail bedliner weighs approximately 45-50 pounds depending on specific bed configuration details. This minimal weight has negligible impact on your truck’s payload capacity or fuel economy.
For comparison, spray-in bedliners typically add 40-60 pounds, while traditional heavy drop-in liners can weigh 70-100 pounds. The lightweight thermoplastic construction provides maximum protection with minimum weight penalty, making it ideal for work trucks that regularly haul near payload limits.