LEER 100XL Truck Cap | Aluminum Construction & Factory-Style Fit
The LEER 100XL is our most popular commercial-grade aluminum truck cap, engineered for drivers who demand both style and durability. Its low-profile aerodynamic design seamlessly integrates with your truck’s roofline, reducing wind resistance while maintaining full-height cargo capacity inside.
We build every 100XL with lightweight aluminum construction and a factory-painted finish that precisely matches your truck’s color. The flush-mount design delivers a sleek OEM appearance that looks like it rolled off the assembly line with your vehicle.
- Lightweight all-aluminum construction for corrosion resistance
- Aerodynamic low-profile design reduces wind noise and drag
- Factory-painted finish in exact match to truck manufacturer color codes
- Frameless curved side glass for maximum visibility
- Carpeted headliner with dome light included
Aluminum Construction & Paint Finish
We manufacture the 100XL shell entirely from lightweight aluminum, delivering strength without adding unnecessary weight to your truck’s payload capacity. The material naturally resists rust and corrosion, even when exposed to road salt, moisture, and extreme weather conditions year after year.
Our factory-applied paint process uses automotive-grade finishes that match your truck manufacturer’s exact color code. We apply multiple coats in a controlled environment, then cure the finish for long-lasting protection against UV rays, chips, and fading. The same attention to detail found across our full line of truck caps ensures your 100XL maintains its showroom appearance through years of daily use.
Low-Profile Aerodynamic Design
The 100XL features a swept-back roofline that contours tightly to your truck’s cab, minimizing the air gap that creates drag and noise at highway speeds. This aerodynamic profile reduces wind resistance by approximately 15-20% compared to traditional box-style caps, translating to improved fuel economy on long hauls.
Despite its low exterior profile, the interior maintains full cargo height from the bed floor to the ceiling. You’ll have no trouble loading toolboxes, camping gear, or equipment that requires vertical clearance.
Glass & Visibility Features
Frameless Curved Side Glass
We install frameless curved side windows that wrap smoothly around the cap’s corners, eliminating the bulky frames found on older designs. This creates unobstructed sightlines when checking your mirrors and backing up in tight spaces.
Rear Door Glass Options
The standard rear door includes a full sliding glass window with a secure locking latch. You can upgrade to a rear door with a flip-up glass section for additional ventilation while maintaining security, or choose solid construction if you prioritize privacy and insulation for your cargo.
Other LEER Truck Caps Built for Your Truck
What people are saying
Common Questions About the LEER 100XL
The 100XL typically weighs between 160-220 pounds depending on your truck’s bed length and the glass options you select. The all-aluminum construction keeps weight significantly lower than comparable fiberglass caps, preserving your truck’s payload capacity.
Most full-size truck owners find the cap can be removed by two people without mechanical assistance, though we recommend using a hoist or lift system for safety and to avoid scratching the paint.
Yes, the 100XL is compatible with LEER’s proprietary roof rack system and most universal crossbar systems designed for truck caps. We recommend using racks specifically rated for aluminum shells to avoid over-stressing the mounting points.
Our roof rack accessories integrate with pre-installed mounting channels on the cap, so installation requires no drilling. Weight capacity varies by rack model but typically ranges from 150-300 pounds when properly distributed.
We back the 100XL with a three-year warranty covering structural defects, paint finish, and all hardware. The warranty includes protection against delamination, corrosion, and manufacturing flaws in materials or workmanship.
Glass components carry a one-year warranty, and all weather stripping is covered for two years. Our warranty remains valid regardless of which authorized dealer performs the installation, and we have service centers nationwide for convenient warranty claims.
The 100XL mounting system accommodates most drop-in bed liners and spray-in bed coatings without modification. Our clamp design adjusts to account for liner thickness up to 0.5 inches.
If you have an over-rail bed liner that extends above the bed rail surface, you may need spacer shims to achieve a level fit. Your dealer will assess your specific liner during the fitting process and make any necessary adjustments.
Leer truck caps use aluminum construction instead of fiberglass, which delivers several advantages including lighter weight, superior corrosion resistance, and better impact resistance against hail and debris. Aluminum also maintains structural integrity in extreme temperature swings without cracking.
Our factory paint process on aluminum shells typically outlasts gel-coat finishes on fiberglass caps, and aluminum allows for more precise color matching to modern truck paint codes. The 100XL’s aluminum construction contributes to its reputation for long-term durability in commercial and recreational use.
Yes, the 100XL rear door includes an integrated locking latch with a keyed cylinder. We can key the lock to match your truck’s existing key, or provide a separate key set if you prefer independent security.
The locking mechanism engages a stainless steel rotary latch that secures the door at two points, preventing forced entry. You can also add optional slam latches or upgrade to a central locking system that integrates with your truck’s power door locks.
The clamp-on mounting system allows you to remove the entire cap in 10-15 minutes with basic hand tools. You’ll loosen the clamps along each bed rail, disconnect the wiring harness for the third brake light, and lift the cap off.
We recommend having a second person assist with removal to prevent damage, or invest in a hoist system if you plan to remove the cap frequently. Many customers leave the cap installed year-round since the aerodynamic design doesn’t significantly impact bed access for most cargo.