LEER 100XL Truck Cap
Our LEER 100XL offers the perfect balance of style and utility for full-size pickups. This premium truck cap features smooth, aerodynamic lines that follow your truck's roofline for a seamless factory appearance while delivering complete weather protection and security for your cargo.
Designed for drivers who want full walk-in access without sacrificing looks, the 100XL stands taller than standard caps to create genuine workspace inside your truck bed. We build every unit with automotive-grade materials and precision-fit construction that integrates with your vehicle like original equipment. The result is a cap that protects your gear, improves fuel economy, and transforms your open bed into lockable, climate-controlled storage space.
What makes the 100XL different
Fiberglass Construction & Finish Quality
We manufacture the LEER 100XL using hand-laid fiberglass with a high-gloss gel-coat finish that’s color-matched to your truck. This isn’t painted fiberglass—the color runs through the entire outer layer, which means minor scratches won’t expose a different shade underneath.
Our molding process creates compound curves that mirror your truck’s body lines precisely. The cap sits flush against the bed rails with no gaps or misalignment, and the aerodynamic profile actually reduces wind resistance compared to driving with an open bed. Each unit goes through a multi-point inspection before it leaves our facility to ensure the finish meets automotive standards.
Walk-In Height & Interior Space
Full Standing Access
The defining feature of the 100XL is the raised roofline that gives you genuine walk-in clearance. We designed this cap for contractors, tradespeople, and outdoor enthusiasts who need to access tools and gear without crawling or kneeling.
The interior height measures approximately 32 inches at the front, tapering to match your truck’s bed depth. That’s enough clearance to move around inside while loading equipment, and the carpeted headliner adds a finished look while dampening road noise. The flat interior ceiling gives you more usable vertical space than caps with visible support ribs.
Window Configuration & Ventilation
The 100XL comes standard with frameless sliding windows on both sides. These aren’t fixed panes—they slide open for cross-ventilation and lock closed for security. Each window includes a built-in screen that keeps insects out while letting air flow through on hot days.
We use tinted safety glass that blocks UV rays and provides privacy for your cargo. The glass is bonded directly into the fiberglass shell using automotive-grade urethane adhesive, creating a permanent weather seal. There are no rubber gaskets to dry out or leak over time.
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Common questions about the LEER 100XL
We manufacture the 100XL for most full-size pickup trucks including Ford F-150/F-250/F-350, Chevy Silverado/GMC Sierra 1500-3500, Ram 1500-3500, Toyota Tundra, and Nissan Titan. Each cap is custom-fit to your exact year, make, model, and bed length.
The mounting system is designed specifically for your truck's bed rail configuration, so the cap will sit flush and seal properly. Contact an authorized LEER dealer with your vehicle information and they can confirm fitment and show you the exact cap that matches your truck.
While the 100XL can technically be installed by two people with basic tools, we strongly recommend professional installation at an authorized LEER dealer. The cap weighs between 150-200 pounds depending on configuration, and proper alignment is critical for weather sealing and appearance.
Our dealers have truck-specific installation guides and the equipment to position the cap correctly. They'll adjust the clamps for even pressure, test the seal, and make sure all windows and locks operate smoothly. Installation typically takes 45 minutes to an hour, and most dealers include it with purchase.
The gel-coat finish requires minimal maintenance—just wash it when you wash your truck using automotive soap and water. Avoid abrasive cleaners or brushes that could scratch the surface.
Once or twice a year, apply a polymer-based car wax to protect the finish and maintain the shine. This also helps repel water and makes the cap easier to clean. The gel-coat is UV-resistant, but regular waxing extends the life of the finish.
For the rubber seal, apply a thin coat of silicone lubricant annually to keep it flexible. This prevents the seal from drying out and ensures a watertight fit between the cap and your bed rails.
The 100XL includes a limited lifetime warranty on the fiberglass shell against defects in materials and workmanship. This covers cracks, delamination, and structural failures under normal use.
Components like windows, locks, and weather seals carry a three-year warranty. We also warranty the paint and finish against fading or peeling for three years. The warranty is transferable if you sell your truck, which helps maintain resale value.
Warranty service is handled through our authorized dealer network. Keep your purchase receipt and have the cap installed by a certified dealer to maintain full warranty coverage.
Yes, the 100XL roof is designed to support aftermarket accessories. We offer LEER-branded roof rack systems that integrate with the cap's structure, or you can install compatible third-party racks.
The fiberglass roof and internal aluminum frame can handle typical roof loads—kayaks, bikes, cargo boxes, or ladder racks. We recommend distributing weight evenly and staying within your truck's total payload capacity.
For interior accessories, the carpeted headliner includes reinforced mounting points for overhead storage nets, fishing rod holders, or tie-down hooks. Your LEER dealer can show you the full accessory catalog and recommend options based on how you use your truck.
The 100XL's aerodynamic profile is designed to minimize drag. In most cases, drivers report either neutral fuel economy or a slight improvement compared to driving with an open bed, since the cap smooths airflow over the truck.
The raised roofline does create more frontal area than a low-profile cap, but the compound curves and tight fit against the cab reduce turbulence. Real-world fuel economy depends on your driving habits, truck configuration, and typical speeds.
Many customers actually see better highway mileage because the cap eliminates the parachute effect of an open tailgate. The enclosed bed also lets you carry cargo inside rather than on an exposed roof rack, which further reduces wind resistance.
The 100XL features a continuous rubber seal system that creates a weather-tight barrier between the cap and your bed rails. When properly installed and maintained, the cap will keep out rain, snow, and road spray under normal driving conditions.
The sliding side windows and rear door all use compression seals that activate when you close and lock them. Water that hits the cap runs off the curved fiberglass surface rather than pooling around the seams.
For extreme conditions like driving through deep water or pressure washing, we recommend keeping a small moisture absorber inside the cap and checking the seal annually. The rubber seal may compress over time with heavy use, but it's easily adjusted by tightening the mounting clamps for consistent pressure around the perimeter.