How to install a front lip without ruining your bumper.

We’ve pulled off more crooked, sagging, tape-only front lips than we can count. The lip is rarely the problem. The install is: no test fit, hardware-store tape, screws through the bumper in the wrong spots. Here’s how we do it instead.

Here’s what you’ll find below:

• Do front lips damage your bumper?
• How to install a front lip in 7 steps
• Tape, screws or both?
• How low is too low?

Do front lips damage your bumper?

Only when they’re installed wrong. A lip that’s test-fit, mounted with proper hardware in sealed holes along the bottom edge, and backed with real automotive adhesive protects the bumper from scrapes. A lip stuck on with cheap tape falls off at highway speed and takes paint with it, and self-tappers driven through the face of the bumper leave holes you can see forever.

The lip is almost never the problem. We’ve yet to see one fail that was test-fit, mounted with the right hardware and sealed.

How to install a front lip in 7 steps

Here are the 7 steps to installing a front lip the right way:

1. Unbox and inspect the lip
2. Test fit with tape and mark the centerline
3. Clean and prep the bumper
4. Apply automotive adhesive or tape
5. Drill and mount along the bottom edge
6. Seal the holes
7. Let it cure, then check it

Let’s go over each step.

1. Unbox and inspect the lip

Lay it on a flat surface and look for warping, especially on fiberglass and carbon pieces that have been in a hot shipping truck. Check that the hardware is all there. A warped lip can sometimes be straightened in the sun or with a heat gun, but find out now, not after the adhesive is on.

2. Test fit with tape and mark the centerline

Hold the lip up with painter’s tape and a helper. Start from the center and work outward, checking that the gap to the bumper is even on both sides and the ends land in the same spot left and right. Mark the center of the bumper and the center of the lip so you can line them up again.

This is the step most people skip, and it’s why most lips sit crooked.

3. Clean and prep the bumper

Wash the bottom of the bumper, then wipe the contact area with isopropyl alcohol to remove wax and road film. If you’re using tape, a plastic adhesion promoter on the bumper makes a huge difference. Adhesive won’t bond to a waxed or dirty surface, no matter how good it is.

4. Apply automotive adhesive or tape

Use automotive-grade double-sided tape (the kind body shops use for trim) or a flexible automotive adhesive along the top edge of the lip. Not hardware-store mounting tape. Press it on along your center marks and work outward, holding with painter’s tape while you move to the hardware.

5. Drill and mount along the bottom edge

Adhesive alone won’t hold at highway speed in a Delaware summer. Mount the lip with screws or bolts through the bottom edge of the bumper where they’re hidden, never through the painted face. Drill small pilot holes, use stainless hardware with washers or nut plates, and space them evenly, with extra hardware at the ends where the wind pulls hardest.

6. Seal the holes

Every hole gets a dab of sealant around the hardware so water doesn’t sit in the bumper and rust the fasteners. It takes two minutes and it’s the difference between a clean removal later and rusty stains.

7. Let it cure, then check it

Give the adhesive 24 hours before you drive, and avoid car washes for a week. After the first few drives, check that nothing has shifted and the hardware is tight.

Tape, screws or both?

Both. Tape or adhesive keeps the lip tight to the bumper so there’s no gap and no rattle. Hardware keeps it on the car. A lip held by tape alone is the one you see in the median on I-95.

How low is too low?

Lower looks better and scrapes more. Before you commit, think about your daily routes: steep driveways, speed bumps, parking blocks. We talk this through with every customer and set the lip for how they actually drive. Some owners add a scrape guard or a rubber strip along the bottom edge for insurance.

Want us to do it?

We install front lips, splitters, side skirts, diffusers and spoilers at our shop in Wilmington, on parts you bought or parts we source. Every part is test-fit first, mounted with proper hardware and sealed. See our accessory installs or read how to tell real carbon fiber from carbon-look before you buy.

Front lip install FAQ