If you’re looking to amp up your Can-Am Outlander 400 or XT from 2004 to 2008, the EVO U series slip-on muffler is where it’s at. This isn’t just any exhaust; it’s designed for those who want to unleash some serious power and sound. The moment you fire up your ATV with this bad boy, you’ll be greeted by a deep, throaty growl that really makes a statement. It’s not for the faint-hearted—this is pure, unfiltered MACHO.
Let’s talk about what makes this muffler stand out. First off, it features a high-temp black thermal coated oval-shaped aluminum body. This isn’t just for looks; it’s built to withstand the heat and stress of off-road adventures. The 304 stainless steel mid-pipe adds durability, while the black powder-coated stainless steel end tip gives it a sleek finish that looks great on your ride.
One of the best parts? It’s way lighter than the stock exhaust, which means you’ll feel that boost in performance right away. We’re talking massive horsepower and torque gains here, so if you’ve been stuck with that restrictive, tinny stock exhaust, it’s time for an upgrade.
And don’t worry about clearance; the sleek muffler design allows for maximum space, so you can tackle those rough terrains without any hassle. Plus, it comes with a removable screen-type spark arrestor and a Vortex Quiet Insert, giving you versatility depending on your ride and noise preferences.
Oh, and did I mention it’s handmade in the USA? That’s right, you’re getting quality craftsmanship that you can trust. Plus, there’s a 1 Year Limited Manufacturer's Warranty for peace of mind.
Just a quick note: this muffler is designed for left-side mounting, so if you’re rolling with a right-side mounting Outlander model, this isn’t the fit for you. But if you’re ready to transform your ATV experience, the 12-6212 Big Gun EVO U Slip-On Muffler is a solid choice. Get ready to turn some heads on the trails.
Other Part Numbers:
Big Gun Exhaust #622040
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Big Gun Exhaust was founded in 1997 by former professional motocross racer, Mike Young, Jr., a three-time winner of the AMA National Four-Stroke Championship. He knew what it took to win the races and used that knowledge to start a business of manufacturing high-performance, quality exhausts for the motocross and sport ATV market, and eventually the side-by-side and street markets as well.
New Ownership, New SuccessAfter more than a decade of success under Young, Big Gun Exhaust was sold to a new owner in the hopes of facilitating further growth. In 2010, the company changed ownership once more, which called for tremendous restructuring in an effort to improve the brand. The new management and sales team helped rebuild the Big Gun Exhaust brand and streamline production and manufacturing processes under one roof in Corona, California. The more efficient manufacturing process resulted in a new level of success never before seen with Big Gun. Today, Big Gun Exhaust boasts one of the largest four-stroke exhaust product lines available and caters to the MX, Sport ATV, Utility ATV, Side-by-Side, Street, and Scooter markets.
What Makes Big Gun Exhaust Special?All quality Big Gun Exhaust products are made right here in the USA using some of the latest cutting-edge equipment, and design and production techniques. Big Gun Exhaust takes pride in having one of the fastest lead times in the industry, which has allowed it to see exponential growth in the last few years.
Big Gun Exhaust has garnered a huge customer base all around the world thanks to its emphasis on customer service and satisfaction. Its partnerships with successful race teams and riders only further solidified the brand’s dedication to competing and winning. The company’s experienced team continues to work closely with racing teams, sponsoring different motorsports events and gathering valuable data to be used in improving its product lineup.
Big Gun Exhaust’s R&D department has been tirelessly working to stay ahead of the competition and develop new innovative systems that exceed customer expectations. The successful ECO, EVO, and EXO lines of four-stroke exhaust systems have been accompanied by the premier EXO stainless series which set the bar even higher for aftermarket performance exhausts in the growing ATV and side-by-side markets.
Upgrade to Big Gun Exhaust TodayBig Gun Exhaust is one of the leading ATV, Motocross, UTV, and Side-by-side exhaust manufacturer in the USA. If you are interested in upgrading to one of its systems, look no further. Vivid Racing has a wide selection of products from Big Gun Exhaust, including exhaust tips, fuel regulators, mufflers, headers, power boxes, packing kits, snorkel kits, and piggyback modules. If you cannot find a particular part above or have questions regarding Big Gun Exhaust, please call our specialized sales team at (480) 966-3040.