How to Replace Motorcycle Exhaust Wrap and Restore Rusty Headers

Exhaust wrap is a common sight on custom motorcycles, bobbers, choppers, and performance builds, but after a few seasons of riding, it can start to look worn, faded, or even frayed. Combined with surface rust on the headers underneath, an otherwise great-looking bike can quickly begin to show its age.

Fortunately, replacing exhaust wrap and refinishing the pipes is a straightforward project that can dramatically improve the appearance of your motorcycle. In this guide, we’ll walk through the process of restoring a wrapped aftermarket exhaust, using a Honda Fury with a 2-into-1 exhaust system as an example.

What Is Exhaust Wrap?

Exhaust wrap is a high-temperature insulating material that is wrapped around exhaust headers. It’s commonly made from fiberglass, volcanic rock (basalt), or titanium fibers designed to withstand extreme heat.

Riders install exhaust wrap for several reasons:

• Heat management: Wrap helps keep more heat inside the exhaust system, reducing radiant heat that reaches the rider’s legs or nearby components.
• Performance: By retaining heat inside the exhaust, gases can remain hotter and theoretically maintain higher velocity. While performance gains are generally modest on street motorcycles, it’s one reason exhaust wrap is popular on performance and racing applications.
• Appearance: Wrapped headers have become a signature look on many custom motorcycles, café racers, scramblers, and cruisers.
• Component protection: Keeping heat away from wiring, bodywork, and other nearby parts can help reduce heat-related wear.

One downside is that exhaust wrap can trap moisture against bare steel pipes. Over time, especially if the bike is ridden in wet conditions or stored outdoors, rust can develop underneath the wrap. That’s why replacing old wrap is a great opportunity to inspect and refinish the headers before installing new material.

Step 1: Remove the Exhaust

Begin by removing the exhaust system from the motorcycle. On the Honda Fury shown in the video, this starts by loosening the acorn cap nuts and removing the mounting hardware until the exhaust can be pulled free.

With the exhaust off the bike, inspect the condition of the existing wrap. If it’s faded, unraveling, or oil-soaked, it’s time for a replacement.

Step 2: Remove the Old Exhaust Wrap

Cut the retaining clamps or locking ties holding the wrap in place and carefully unwrap the headers.

If your exhaust wrap is made from fiberglass, wear gloves, long sleeves, eye protection, and a dust mask or respirator. Older fiberglass wrap can become brittle and release tiny fibers into the air as it’s removed, which can irritate your skin and lungs.

Dispose of the old material properly before moving on.

Step 3: Remove Rust and Prepare the Surface

Once the headers are exposed, inspect them for rust.

Light surface rust can often be removed with sandpaper or abrasive pads, while heavier corrosion may require a rust dissolver or chemical rust remover. The goal is to remove as much rust as possible to create a clean surface for refinishing.

Taking your time during this step helps ensure the new coating adheres properly and provides better long-term protection.

Step 4: Apply High-Temperature Exhaust Paint

After the pipes are cleaned and completely dry, apply a high-heat ceramic exhaust coating according to the manufacturer’s instructions.

These coatings are specifically designed to withstand the extreme temperatures produced by motorcycle exhaust systems while helping protect against future corrosion.

Allow the coating to dry completely before installing the new exhaust wrap.

Step 5: Install the New Exhaust Wrap

Wrap the headers using the same direction and overlap pattern as the original installation. Keeping consistent tension throughout the process helps produce a clean, uniform appearance.

Once the wrap reaches the end of the pipe, secure it using stainless steel exhaust wrap clamps or locking ties. A clamp installation tool makes tightening these much easier and helps ensure the wrap stays securely in place.

Step 6: Reinstall the Exhaust

Before reinstalling the exhaust, replace the exhaust gasket with a new one. Reusing an old gasket can lead to exhaust leaks and reduced sealing performance.

Reinstall the exhaust, hand-tighten all mounting hardware, then torque the fasteners to the manufacturer’s specifications. For the Honda Fury featured in this project, the exhaust flange nuts are tightened to 17 ft-lbs.

Always verify torque values for your specific motorcycle by consulting the factory service manual.

Step 7: Heat Cure the New Wrap

The final step is one many riders overlook.

Start the motorcycle and allow it to idle for approximately 10 to 15 minutes to heat cure both the ceramic coating and the new exhaust wrap. During this process, it’s completely normal to see smoke and notice an odor coming from the headers as manufacturing oils and binders burn off.

Perform this step outdoors or in a well-ventilated area.

After the initial heat cycle, shut the bike off and allow the exhaust to cool completely before riding. Any remaining smoke or smell should disappear after the first one or two rides.

Give Your Exhaust a Fresh Start

Replacing old exhaust wrap is a relatively inexpensive maintenance project that can completely change the appearance of your motorcycle. More importantly, it’s an opportunity to inspect the condition of your headers, remove rust before it becomes a larger problem, and protect the pipes with a fresh high-temperature coating.

With a little patience and the right materials, you can restore a tired-looking exhaust and have it looking nearly new again and ready for many more miles on the road.