Exhaust System Kits
About Exhaust System Kits
A full exhaust system kit replaces everything from the cylinder head back to the muffler in one matched package, so the pieces are designed to fit each other. Riders choose one to cut weight, to change the sound, to freshen a bike whose original pipes have rusted or been damaged, or to change the look with a different finish. Because every section changes, it makes a bigger difference than a muffler swap alone.
The main choice is layout. On a twin, a 2-into-1 system merges both pipes into a single muffler for a compact look, and a dual system keeps two pipes for the traditional appearance. The kits listed here include examples of both, along with titanium and carbon fiber systems.
Materials and finishes matter: stainless is rust-resistant, titanium and carbon fiber are lighter, and chrome and black are the common cruiser finishes. Check whether the system is listed as 49-state, off-road or race only, and that it works with your saddlebags, passenger pegs and any oxygen sensors on the bike. Plan on gaskets and hardware, and on a tune or fuel controller if the maker recommends one.
Brands in this category include Cobra, S&S Cycle, Akrapovic, Pro Circuit and FMF Racing. Exhaust fit depends on the exact model and year, so pick your bike in the Ride Finder at the top of the page. Riders who only want to change the rear section can look at Silencers, Mufflers & Baffles, and the individual sections are in Manifolds & Headers and Exhaust Pipes & Tips. For Harley riders choosing between two popular names, see this exhaust comparison. If you are weighing a full system against a slip-on, this guide to slip-on vs. full exhaust covers the differences.
FAQs on full motorcycle exhaust systems
When does a full system make sense instead of a slip-on?
Choose a full system when you want a larger change in weight, sound and styling, or when your existing head pipes are rusted or damaged. A slip-on replaces only the muffler and keeps the stock head pipes, so it is the simpler change.
What is the difference between a 2-into-1 and a dual exhaust?
A 2-into-1 system joins the pipes from both cylinders into one muffler, which is compact and lighter. A dual system keeps a separate pipe and muffler for each cylinder, giving the classic cruiser look. Sound, weight and clearance differ between designs.
Will a full exhaust fit with my saddlebags and passenger pegs?
Not always. Clearance depends on the exhaust design and the bike, and some systems are made for specific bagger or touring models. Read the fitment notes on the listing and check them against your accessories.
What else do I need to install a full exhaust system?
Plan for fresh gaskets and any hardware not included, and check whether the system has a port for your oxygen sensor. Many bikes also need a fuel controller or a new map afterward. Follow the maker's installation instructions.
Should I choose stainless, titanium or carbon fiber?
Stainless is durable and resists rust. Titanium is lighter and also resists corrosion. Carbon fiber is used mostly for mufflers and covers to save weight and for looks. Pick on weight, finish and how much heat protection the part needs.
