LEER Cap — Premium Fiberglass Truck Caps & Tonneau Covers
Our flagship fiberglass cap sets the industry standard for OEM-matched styling and durability. The 100XQ is engineered with a high-gloss gelcoat finish, sealed seams, and carpeted headliner to protect your cargo from the elements while complementing your truck's factory lines.
We build every 100XQ to match your vehicle's specific year, make, and model. Side windows, rear doors, and roof racks are available to configure the cap exactly how you need it — whether you haul tools every day or gear for weekend adventures.
Construction & finish highlights
Fiberglass Construction & Finish Quality
Every LEER cap begins with marine-grade fiberglass molded in matched dies to ensure precise panel alignment and OEM fit tolerances. We apply multiple layers of high-gloss gelcoat before the resin cure, creating a finish that resists UV fading, oxidation, and minor impacts far better than painted aluminum alternatives.
The structural core features reinforced fiberglass matting at stress points — roof corners, hinge mounts, and lock cylinders — so the shell maintains its shape through thousands of door cycles and highway miles. Our color-match process uses factory paint codes to blend seamlessly with your truck’s cab, and we periodically update formulations to track OEM color shifts across model years.
Side Window & Ventilation Options
Standard side windows are front-sliding panels with tinted safety glass and removable screens. Each slider locks in the closed position and can be partially opened for cross-ventilation when the rear door is cracked. We install felt channels in the window tracks to prevent rattles and keep debris from jamming the slide mechanism.
For contractors and tradespeople who prioritize security, we offer solid fiberglass side panels with no windows. This configuration eliminates glass break-ins and keeps tools out of sight. Solid panels also improve interior insulation if you’re adding climate-controlled storage or a camper conversion.
Interior Features & Cargo Access
The carpeted headliner and rear door panels provide a finished appearance and reduce condensation on cold mornings. We use marine-grade carpet treated with mildew inhibitors, so the interior stays fresh even when you’re storing damp fishing gear or muddy boots.
An integrated LED dome light mounts in the headliner center with a three-position rocker switch: off, door-activated, and constant-on. The door-activated mode uses a magnetic reed switch in the rear door frame so the light illuminates automatically when you open the door and shuts off thirty seconds after closing. The constant-on setting is useful when you’re working inside the bed at night and need steady task lighting.
Popular Fiberglass Truck Cap Models
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Common Questions About LEER Caps
LEER caps are manufactured to exact bed length and rail dimensions for specific truck year, make, and model combinations. When you order through an authorized dealer, they'll use your VIN or truck specifications to select the correct cap model and confirm bed length (short bed, standard bed, or long bed). Our dealer network maintains fitment databases updated annually to account for mid-year manufacturing changes and new truck releases.
If you've modified your truck with an aftermarket suspension lift or oversized tires, the cap will still fit the bed rails as designed. However, you may need to account for increased ground clearance when calculating garage door height or overhead obstacles.
While our caps are designed for no-drill installation using C-clamps, we strongly recommend professional dealer installation for several reasons. First, fiberglass caps are large and awkward — the 100XQ weighs between 180 and 240 pounds depending on options, and aligning it solo risks dropping the unit and damaging the gelcoat. Second, dealers torque the clamps to manufacturer specifications and verify the foam gasket is compressed evenly around the entire perimeter to ensure a watertight seal.
If you're mechanically inclined and have two helpers, DIY installation is possible. You'll need a torque wrench, and we recommend laying out all clamps and hardware before lifting the cap onto the bed. Most installations take 45-90 minutes with a trained crew.
Adding a cap changes your truck's aerodynamics, and the net effect on fuel economy depends on your driving habits and cap style. Low-profile models like the LEER 180 are designed to reduce drag at highway speeds, and some drivers report a 1-2 MPG improvement on long freeway trips because the cap smooths airflow over the open bed.
High-roof models like the 100R create more frontal area and may slightly reduce highway efficiency, though the difference is typically less than 1 MPG. City driving and stop-and-go traffic show minimal impact because aerodynamic drag is negligible at low speeds. The added weight of the cap (180-240 pounds) has a minor effect on acceleration and hill climbing but is not significant for most daily driving scenarios.
Wash your LEER cap with the same soap and process you use on your truck's painted surfaces. Avoid automatic car washes with stiff brushes that can scratch gelcoat; touchless washes or hand washing with a microfiber mitt are safest. We recommend waxing the cap twice a year using a marine or automotive paste wax to maintain UV protection and gloss.
Minor scratches can be buffed out with a gelcoat polishing compound available at marine supply stores. For deeper scratches that expose the underlying fiberglass, your LEER dealer can provide color-matched gelcoat repair kits. Avoid parking under trees that drop sap or acidic bird droppings, as these can etch the gelcoat if left on the surface for extended periods.
Most LEER caps come standard with integrated roof track systems bonded into the fiberglass during manufacturing. These T-slot channels run front-to-back and accept crossbars, kayak saddles, or ladder racks without requiring you to drill holes in the cap roof. The track system is load-rated at 300 pounds evenly distributed.
If you ordered a cap without factory roof tracks, aftermarket rack systems are available that clamp to the cap's front and rear edges. However, these clamp-style racks have lower load ratings (typically 150-200 pounds) and require careful installation to avoid cracking the gelcoat at the mounting points. We recommend ordering roof tracks at the time of purchase if you plan to haul cargo on top of the cap.
A LEER cap is a full-height fiberglass shell that encloses the entire truck bed, providing walk-in cargo access, standing headroom (on high-roof models), and weatherproof storage. Caps are ideal if you haul tall items, need secure lockable space, or want to convert your bed into a camper or work area. The fiberglass construction offers superior durability and insulation compared to soft covers.
A tonneau cover is a low-profile lid that sits flush with the bed rails. Tonneau covers come in soft roll-up, hard folding, and retractable styles. They're designed for drivers who want to protect cargo from weather and theft while maintaining the truck's original sight lines and fuel efficiency. Tonneau covers provide quick bed access and cost less than caps, but they don't offer the same interior headroom or load-bearing roof capacity.
Yes, the limited lifetime warranty on the fiberglass shell transfers to subsequent owners as long as the cap remains installed on the original truck it was manufactured to fit. If you remove the cap and reinstall it on a different truck model, the warranty is void because the cap is engineered for specific bed rail dimensions and may not seal properly on a different vehicle.
Windows, locks, and weatherstripping carry a three-year warranty from the original purchase date and do not extend to new owners beyond that period. If you're buying a used truck with a LEER cap already installed, ask the seller for the original purchase invoice so you can verify the cap's age and remaining warranty coverage.