Frederick Line-X
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Serving MD Frederick LINE-X is the area's top vehicle outfitter with over 16 years of experience.
Offering durable vehicle protection: bedliners, undercoating, custom accessories: tonneau covers, cargo solutions, step bars, towing hitches, bumpers, winches, van upfits, tires, wheels, and custom floormats all installed with expert precision. We're your one-stop shop for LINE-X spray-on bedliners, undercoating protection and auto accessories. Whether you're looking for a protective coating for y
Year-round protection starts underneath. LINE-X Undercoating helps shield your vehicle from moisture, road chemicals, and the elements to help prevent corrosion and protect your investment for years to come.
Frederick LINE-X
Over 26 Years of Protection and Performance
📞 301-360-9900
Winter may be over, but the elements never take a season off.
Road chemicals, moisture, dirt, and everyday wear can all take a toll on your vehicle year-round. A professional undercoating helps protect against corrosion and keeps your investment looking and performing at its best through every season.
Protect your investment today.
Frederick LINE-X
Over 26 Years of Protection and Performance
📞 301-360-9900
Summer Special on these Wheels!
Originally $3,500 — now just $3,000. Upgrade your ride and save $500 while this deal lasts. Call today before they’re gone! 301-360-9900
Freshly LINE-X'd and ready for whatever comes next.
Whether it's tools, equipment, weekend gear, or the daily grind, a LINE-X spray-on bedliner provides the durable protection your truck needs against scratches, dents, and wear.
Built tough. Installed right. Ready for work.
Frederick LINE-X
301-360-9900
Heading out on vacation this summer?
A tonneau cover does more than make your truck look great. It helps protect your gear from unexpected rain, road dust, and prying eyes while you're on the move.
Whether you're hauling tools during the week, packing luggage for a family road trip, or loading up camping gear for a weekend adventure, a quality tonneau cover keeps your cargo secure, protected, and out of sight.
Work hard. Play harder. Travel with confidence this summer.
Frederick LINE-X
301-360-9900
Everything under one roof.
There’s only one yellow oval, and it’s your one-stop shop for truck and fleet upfitting.
From spray-on bedliners and tonneau covers to step bars, shelving, ladder racks, lighting, and complete fleet solutions, Frederick LINE-X has everything you need under one roof.
Built tough. Installed right. Ready for work.
Choose LINE-X for all your upfitting needs.
📞 301-360-9900
Just because it's spring doesn't mean it's too late to protect your vehicle.
A professional undercoating helps shield your vehicle from moisture, road debris, rust, and corrosion all year long, not just during winter.
Protect your vehicle in every season. Schedule your undercoating today. Call Frederick LINE-X at 301-360-9900.
From prep work to reassembly, every step matters. For over 26 years, we’ve been delivering the most durable spray-on bedliners on the market — built tough, installed right, and made to last. 301-360-9900
05/25/2026
This Memorial Day, we pause to remember and honor the brave men and women who made the ultimate sacrifice for our country. Their courage, selflessness, and dedication to protecting our freedoms will never be forgotten.
We also extend our deepest gratitude to those who have served and continue to serve today. Because of you, we enjoy the freedoms and opportunities we often take for granted.
From all of us at Frederick LINE-X, thank you to the heroes who have worn the uniform and to the families who stand beside them. Wishing everyone a safe, meaningful, and reflective Memorial Day.
Frederick LINE-X is your one-stop shop for all your upfitting needs — from bedliners and tonneau covers to step bars, shelving, cargo solutions, and more. One team. One roof. Done right. Call 301-360-9900 today.
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Contact the business
Address
5112 Pegasus Court, Y
Frederick, MD
21704
Opening Hours
| Monday | 8am - 4pm |
| Tuesday | 8am - 4pm |
| Wednesday | 8am - 4pm |
| Thursday | 8am - 4pm |
| Friday | 8am - 4pm |