Rugged Liner CC6U15 Under-Rail Truck Bed Liner
We engineered the Rugged Liner CC6U15 under-rail truck bed liner to deliver maximum protection for 2015-2019 Chevrolet Colorado and GMC Canyon short bed models. This drop-in bed liner installs beneath your truck’s stake pocket rails, preserving the factory appearance while shielding your bed from dents, scratches, and cargo damage.
Our CC6U15 features thick, impact-resistant polyethylene construction that won’t crack in extreme temperatures. The textured surface prevents cargo from sliding, while raised ribs channel water and debris away from your truck bed floor for easier cleanup after every haul.
CC6U15 specifications & compatibility
Materials & Construction
We manufacture the Rugged Liner CC6U15 under-rail truck bed liner from premium-grade polyethylene that stands up to the toughest jobsite and weekend warrior demands. This material delivers superior impact resistance compared to spray-on alternatives, absorbing the shock when you load heavy equipment, lumber, or landscaping materials.
The UV-stabilized formula prevents the liner from fading, cracking, or becoming brittle even after years of direct sun exposure. Our proprietary texture pattern not only prevents cargo shift but also hides minor scuffs and scratches that would be visible on smooth surfaces.
Vehicle Compatibility & Fitment
The rugged liner cc6u15 under rail truck bed liner fits 2015, 2016, 2017, 2018, and 2019 Chevrolet Colorado and GMC Canyon trucks equipped with the short bed configuration (approximately 5-foot bed length). This custom-molded design accounts for every contour, wheel well, and bed rail profile specific to these mid-size truck models.
Under-Rail Installation Design
Our under-rail configuration installs beneath your truck’s factory stake pocket rails rather than over them. This approach maintains the stock appearance of your truck bed while still providing comprehensive floor and side wall protection. The liner sits flush with the bed floor, maximizing usable cargo space without the height reduction that over-rail liners create.
Installation Process
We designed the CC6U15 for straightforward drop-in installation that most truck owners complete in 20-30 minutes with no special tools required. Start by thoroughly cleaning your truck bed to remove dirt, gravel, and debris that could prevent proper seating.
Position the liner at the tailgate end and slide it forward into the bed, ensuring the wheel well contours align properly on both sides. The liner’s flexible edges will compress slightly as you press down, allowing it to snap beneath the stake pocket rails. Walk through the bed applying firm downward pressure along the perimeter to secure all edges.
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Questions About the CC6U15 Under-Rail Bed Liner
The CC6U15 is engineered specifically for 2015-2019 Chevrolet Colorado and GMC Canyon models with short bed configurations. Chevrolet and GMC made bed dimension changes for the 2020 model year refresh that require a different part number.
If you own a 2020 or newer truck, please check our complete bed liners selection for the correct model number for your year and bed length. Installing an incorrect year liner will result in poor fitment and inadequate protection.
Under-rail bed liners like the CC6U15 install beneath your truck’s stake pocket rails, sitting flush with the bed floor for a factory appearance. This design maximizes usable cargo height and maintains access to all factory tie-down points.
Over-rail liners extend up and over the bed rails, providing additional side wall protection but reducing interior bed height by several inches. The under-rail design offers cleaner aesthetics and better cargo space utilization, while over-rail models provide more comprehensive coverage for extreme-duty applications.
The rugged liner cc6u15 under rail truck bed liner features straightforward drop-in installation that requires no drilling, special tools, or professional assistance. Most truck owners complete installation in 20-30 minutes working alone.
Simply clean your truck bed thoroughly, position the liner starting at the tailgate, and press firmly along all edges to seat it beneath the stake pocket rails. The custom-molded design ensures proper alignment when you match the wheel well contours on both sides.
The CC6U15 provides excellent rust prevention by creating a protective barrier between your truck’s painted bed surface and cargo that could scratch or damage the finish. The liner shields against impacts, scratches, and moisture that lead to rust formation.
For maximum rust prevention, we recommend periodically removing the liner to clean any dirt or moisture that may accumulate underneath, especially if you regularly haul wet materials. This simple maintenance step ensures both the liner and your truck bed remain in excellent condition for years.
We back the rugged liner cc6u15 under rail truck bed liner with a limited lifetime warranty against manufacturing defects, cracking, and warping under normal use conditions. This coverage remains valid for as long as you own the vehicle in which the liner is installed.
The warranty does not cover damage from intentional abuse, modifications to the liner, or improper installation. Complete warranty terms and claim procedures are included with your purchase and available on our website.
Routine maintenance involves simply hosing out the bed after hauling dirty cargo, or using a pressure washer for stubborn mud and debris. For oil or chemical spills, apply a degreasing cleaner, scrub with a stiff brush, and rinse thoroughly.
The polyethylene material resists staining from most automotive fluids and chemicals. We recommend removing the liner twice per year to clean underneath and inspect your truck’s bed surface. This prevents moisture accumulation and ensures long-term rust protection for your vehicle.
The CC6U15’s custom-molded design and snug fit beneath the stake pocket rails keep it securely in place during normal driving, highway use, and moderate off-road conditions. The liner’s weight combined with the precise fitment prevents shifting without requiring fasteners or adhesive.
For extreme off-road use or aggressive driving, some owners choose to add optional tie-down anchors for extra security, though we’ve found the factory fit sufficient for the vast majority of applications including towing and light trail riding.