If you're tired of that stock exhaust system that sounds more like a tin can than a beast on wheels, let me tell you about the EVO U series. This bad boy is all about delivering a deep, throaty growl that you can feel in your bones. Designed for utility ATVs, sport utility ATVs, and Side x Sides, this exhaust isn’t for the faint-hearted. It’s built for those who crave raw power and an aggressive sound that turns heads.
Swapping out your factory exhaust for the EVO U series is like upgrading from a bicycle to a motorcycle. The first thing you’ll notice is the sound—it's pure MACHO. No more of that restrictive, high-pitched whine; this exhaust gives you the growl you’ve been missing. And let’s not forget about the performance boost. With massive horsepower and torque gains, you'll feel the difference right off the bat.
Now, let’s get into the nitty-gritty. The EVO U series features high-temp black thermal coated oval-shaped aluminum mufflers that not only look sleek but are built to last. The TIG welded reinforced muffler brackets ensure that everything stays put, even when you're tearing through rough terrain. Plus, the 304 stainless steel mid pipe and head pipes are designed to withstand the elements while providing that robust sound.
Worried about weight? This system is much lighter than stock, which means better handling and performance. The sleek design allows for maximum clearance, so you won’t have to worry about snagging on obstacles. And if you're concerned about spark issues, it comes with removable screen-type spark arrestors and Vortex Quiet Inserts, which are a nice touch for those times when you want to keep it a bit quieter.
Oh, and did I mention it’s handmade in the USA? That’s right—this isn’t some mass-produced kit; it’s crafted with care. Plus, you get a 1 Year Limited Manufacturer's Warranty, so you can hit the trails with confidence.
As for fitment, this exhaust is compatible with Polaris RZR 900 models from 2011 to 2014, and the Polaris RZR XP 4 900 from 2011 to 2014. If you’re ready to unleash the true potential of your ride, the Big Gun EVO U Dual Full System is the upgrade you’ve been waiting for.
Other Part Numbers:
Big Gun Exhaust #623762
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Vehicle Make/Model | Year | Trims |
|---|---|---|
| Polaris RZR 900 | 2014 | Base |

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.