How to Install Side Skirt Extensions on a Honda Accord: Step-by-Step DIY Guide

Adding side skirt extensions is one of the most impactful ways to transform the appearance of your Honda Accord. These aero components lower the visual profile of your car, giving it a more aggressive and sporty stance. Whether you drive a 10th-gen or 11th-gen Accord, installing side skirt extensions can be a rewarding weekend project that dramatically upgrades your car's exterior.

In this guide, we'll walk you through the entire installation process for side skirt extensions on a Honda Accord. We'll cover the tools you need, preparation steps, mounting techniques, and finishing touches. By the end, you'll have the confidence to tackle this mod yourself and achieve professional-looking results.

Tools and Materials You'll Need

Before you start, gather the following tools and supplies. Having everything ready will make the installation smoother and faster.

You'll need: side skirt extensions (ensure they are designed for your Accord model year), 3M automotive-grade double-sided tape, a roll of painter's tape, isopropyl alcohol or a wax and grease remover, a microfiber cloth, a heat gun or hair dryer, a utility knife or scissors, a measuring tape, and a marker. Optionally, you can use self-tapping screws or rivets for a more permanent installation, but tape alone is sufficient for most aftermarket side skirts.

• Always test fit the side skirt extensions before applying any adhesive. This ensures alignment and saves you from repositioning later.

Preparing Your Honda Accord for Installation

Proper surface preparation is critical for a secure bond. Start by washing the sides of your car thoroughly to remove dirt and grime. Dry completely with a microfiber cloth.

Next, use isopropyl alcohol or a wax and grease remover to wipe down the area where the side skirt extensions will be applied. This removes any residual wax, polish, or contaminants that could weaken the adhesive. Allow the surface to dry for a few minutes.

If your Accord has factory side skirts or rocker panels, you may need to remove them first. Consult your vehicle's manual or the product instructions for specific guidance. For most models, the factory skirts can be unclipped or unscrewed easily.

• For best adhesion, work in a garage or shaded area. Direct sunlight can cause the tape to cure too quickly and reduce bond strength.

Test Fitting and Alignment

Before applying any tape, hold the side skirt extension against the car to check fitment. Most aftermarket extensions are designed to contour to the factory lines. If you notice any gaps or misalignment, you may need to trim the ends with a utility knife.

Use painter's tape to temporarily hold the extension in place. Step back and inspect the alignment from different angles. Ensure the extension follows the natural curve of the rocker panel and sits flush against the body. Mark the final position with a marker on the underside of the extension or on the car itself.

For a precise installation, consider using a measuring tape to ensure the extension is evenly spaced from the front and rear wheel wells. Symmetry is key to a professional look.

• If you're installing a set like the 2016-2021 Honda Civic Coupe V4 Side Skirt Extensions, note that the process is similar for most Honda models, but always refer to the specific product instructions.

Applying the Adhesive and Mounting the Extensions

Once you're satisfied with the fit, remove the painter's tape and clean the surface again with isopropyl alcohol. Now, apply 3M double-sided tape to the back of the side skirt extension. Use a continuous strip along the entire length, and add extra strips at the edges and corners for added security.

If your kit includes screws or rivets, pre-drill small pilot holes through the extension and into the rocker panel. Be careful not to drill into any wiring or components behind the panel. For a cleaner look, many enthusiasts prefer using only tape, which is sufficient for lightweight polyurethane or ABS extensions.

Peel off the tape backing and carefully position the extension against the car. Press firmly along the entire length, applying even pressure for at least 30 seconds. Use a heat gun or hair dryer on a low setting to warm the tape, which improves adhesion. Hold the extension in place with painter's tape while the adhesive cures.

• For heavy-duty installations, especially on vehicles that see track use, consider adding a few self-tapping screws along the bottom edge. This provides extra mechanical fastening.

Finishing Touches and Curing Time

After the side skirt extensions are mounted, inspect the seam for any gaps. If you notice any lifting, apply additional pressure or use a small clamp (with padding) to hold the area down. Remove any excess adhesive that may have squeezed out using a plastic razor blade or your fingernail.

Allow the adhesive to cure for at least 24 hours before driving at high speeds or washing the car. During this time, avoid exposing the car to heavy rain or extreme temperatures. Once cured, the bond will be strong enough to withstand daily driving.

For a cohesive look, you may want to pair your new side skirt extensions with other aero upgrades like a front splitter or rear diffuser. The 2019-2025 Toyota Corolla Hatchback V1 Splitter is a popular choice for compact cars, though for the Accord, look for model-specific options.

• To maintain the appearance of your side skirt extensions, clean them regularly with mild soap and water. Avoid using harsh chemicals that could damage the finish.

Installing side skirt extensions on your Honda Accord is a straightforward DIY project that can dramatically enhance your car's aesthetic. With the right tools, preparation, and patience, you can achieve a clean, professional installation at home. Once you've completed this mod, you'll likely want to explore other aero upgrades to complete the look. Check out our selection of side skirt extensions and other exterior accessories to take your Accord to the next level.