Lomax 170 Hard Tri-Fold Tonneau Cover | Low-Profile Aluminum Truck Bed Cover
Our Lomax 170 is the tonneau cover that started it all. We engineered this hard tri-fold with aircraft-grade aluminum panels and a proprietary hinge system that gives you instant bed access without removing the entire cover. The matte black powder-coat finish resists UV damage and complements any truck style, while the low-profile design sits flush with your bed rails for improved aerodynamics.
We designed the 170 for truck owners who refuse to choose between security and convenience. The reinforced aluminum construction supports up to 400 pounds of evenly distributed weight, so you can load gear on top when you need the extra capacity. Installation takes 20 minutes with basic hand tools and zero drilling—our clamp system integrates with your existing stake pocket holes for a rock-solid fit that won't damage your truck bed.
What makes the 170 our most popular cover
Aluminum Construction & Finish Details
We built the Lomax 170 with 6063-T6 aluminum alloy—the same material used in aircraft fuselages. This specific alloy delivers exceptional strength-to-weight ratio, resisting dents and corrosion far better than steel alternatives while keeping the cover light enough for one-person operation.
The matte black powder-coat finish goes through a multi-stage application process that bonds molecularly to the aluminum surface. This isn’t a spray-on coating that chips after a few months. We cure each panel at 400°F to create a finish that withstands UV exposure, road salt, and temperature extremes from -40°F to 180°F. The textured matte surface hides minor scratches and eliminates glare, maintaining that factory-fresh appearance year after year.
Tri-Fold Operation & Bed Access
Front & Rear Opening Versatility
Our patented hinge system on the 170 gives you two ways to access your truck bed. Fold the cover forward from the tailgate to load large items, or flip it back from the cab when you need to grab something quick without walking to the rear. Both configurations lock securely in the open position, so you’re not fighting spring tension or worrying about the cover slamming shut.
The center panel includes integrated handles that make folding effortless even with gloves on. When fully opened, the entire cover stacks compactly against the cab, giving you complete bed access without removal. Close it back down in seconds—the alignment guides ensure all three panels seat properly every time, maintaining that weather-tight seal.
Installation Process & Bed Compatibility
We designed the 170 clamp system to work with your truck’s factory stake pocket holes—no drilling, no permanent modifications. You’ll receive vehicle-specific clamps matched to your exact make, model, and bed length. The entire installation takes about 20 minutes with a socket wrench and an extra set of hands to position the cover.
Our step-by-step installation guide includes photos for every truck model we support. The clamps apply even pressure across the bed rails, creating a secure mount that won’t shift during highway driving. We include all necessary hardware, adjustment shims for leveling, and a torque specification chart to ensure proper tightening. The 170 works with most bed rail systems, over-the-rail bed liners, and doesn’t interfere with fifth-wheel or gooseneck hitch installations when properly positioned.
Complete Your Lomax 170 Setup
Rated 4.8 by verified buyers
Common Questions About the Lomax 170
Yes, the 170 works with most over-the-rail and spray-in bed liners. Our clamp system includes adjustment shims that compensate for the added liner thickness, typically 0.25 to 0.5 inches. If you have a drop-in liner that sits inside the bed rails, you'll need to remove it for proper cover installation.
We provide vehicle-specific clamp sets for Ford, Chevy, GMC, Ram, Toyota, and Nissan trucks. Measure your bed rail width after liner installation and contact us if you're unsure about compatibility—we'll confirm the right clamp configuration for your setup.
The Lomax 170 is engineered for all-weather performance. The 6063-T6 aluminum maintains structural integrity from -40°F to 180°F without becoming brittle or warping. Our EPDM rubber seals remain flexible in freezing temperatures and won't degrade under intense UV exposure.
In heavy rain or snow, the overlapping panel design and compression seals keep moisture out of your truck bed. We've tested the 170 under simulated snow loads exceeding 600 pounds without panel damage. The powder-coat finish resists road salt corrosion, making it ideal for winter driving in northern climates.
Yes, the Lomax 170 supports up to 400 pounds of evenly distributed weight, making it compatible with most lightweight roof racks and cargo carriers designed for tonneau covers. The aluminum panels are reinforced to handle this additional load without flexing or permanent deformation.
We recommend using rack systems with rubber feet or protective pads to prevent scratching the powder-coat finish. Avoid concentrated point loads—distribute weight across multiple contact points. If you regularly carry heavy equipment, consider our Lomax 370 Stance, which features a thicker center panel specifically engineered for increased load capacity.
The Lomax 170 adds only 1.5 inches of height above your bed rails when fully closed. This low-profile design improves aerodynamics and allows most trucks to fit in standard parking garages without clearance issues.
When opened and folded against the cab, the stacked panels extend approximately 11 inches above the bed rails. This compact folded position doesn't interfere with cab visibility and still allows you to load tall items in the bed. The precise dimensions vary slightly by truck model based on bed rail configuration.
Yes, the Lomax 170 is compatible with most fifth-wheel and gooseneck hitch installations when properly positioned. The tri-fold design allows you to open the cover forward from the tailgate, giving you full access to the hitch mounting area in the front of the bed.
For flip-over fifth-wheel hitches, ensure the hitch is in the lowered position before closing the cover. The 170 panels won't interfere with hitch operation when the cover is open. If you have a permanently mounted gooseneck ball, contact us for specific installation guidance—some configurations may require minor clamp positioning adjustments.
We manufacture the Lomax 170 in vehicle-specific configurations for most popular truck models. You'll need three pieces of information: your truck's make, model year, and bed length (typically 5.5', 6.5', or 8').
Our online fit guide walks you through the selection process and confirms compatibility before you order. The clamp system and panel dimensions are precision-matched to your truck's bed rail profile. If you have an uncommon truck model or custom bed modification, contact our technical support team—we'll verify fitment and recommend any necessary adapter kits.
Our lifetime warranty covers all structural components of the 170 including the aluminum panels, hinge assemblies, and latch mechanisms against defects in materials or workmanship for as long as you own the cover. If any covered component fails due to manufacturing defect, we'll repair or replace it at no charge.
The warranty doesn't cover damage from accidents, improper installation, or normal wear items like rubber seals and cosmetic finish. EPDM seals typically last 3-5 years depending on climate and usage—replacement seal kits are available separately. The powder-coat finish is warranted against peeling or delamination for five years under normal use and maintenance.