When it comes to upgrading your ride, the EVO R series has been a game changer for me. Drawing from years of experience in the power game, this slip-on exhaust is designed for various off-road MX and sport ATV models, and let me tell you, it’s a solid choice if you’re looking to shed some weight and boost your performance.
Now, I should mention right off the bat that this isn’t a full system. You’ll need to grab either the slip-on or the full exhaust setup separately. But if you’re just looking to enhance what you’ve got, the EVO R is a fantastic way to go.
What I love about this exhaust is its hard anodized oval-shaped aluminum muffler. It not only looks sleek but also helps keep things lightweight. And those TIG welded reinforced muffler brackets? They provide the kind of durability you want when you’re out tearing up trails. The 304 stainless steel mid-pipe adds to its resilience, while the red powder-coated stainless steel end tip gives it an eye-catching finish.
Performance-wise, you’re in for a treat. This setup is noticeably lighter than the stock exhaust, which translates to some serious horsepower and torque gains. I’ve felt the difference firsthand, especially when I’m pushing my Yamaha WR 450F through tough terrain. Plus, the design allows for maximum clearance—no more worrying about snagging on rocks or roots.
Another nice touch is the removable screen-type spark arrestor that comes included. This feature is a must for trail riders who need to stay compliant with local regulations. And let’s not forget, this exhaust is handmade in the USA, which is always a bonus in my book. You can also rest easy with a 1 Year Limited Manufacturer's Warranty backing your purchase.
For fitment, this bad boy is tailored for the Yamaha WR 450F from 2007 to 2011. If that’s your ride, you’re in luck. The 09-24522 Big Gun Evo R Slip On is ready to transform your experience on the track or trail.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
2007-2011 Yamaha WR450F |
WR450F | 2007-2011 |

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.