About Rossier Engineering
Performance Since 1991
Rossier Engineering opened its doors in 1991 as a watercraft and dirt-bike performance shop. During the watercraft racing boom of the 1990s, the company earned a reputation for exceptional craftsmanship and competitive performance.
As that market shifted, we expanded into ATV performance — where our exhaust systems quickly became known for durability, power, and race-proven reliability. Today, Rossier Engineering continues to support riders with products built from years of hands-on engineering and real racing experience.
A Legacy of Real Racing Performance
What sets Rossier Engineering apart is simple:
Our products are proven where it matters most — in competition.
Our exhaust systems have powered riders through some of the toughest racing conditions in the world, including:
- Dakar Rally events
- 6,213-mile endurance racing tests
- Factory-level MX racing
- Cross-country competition
- Magazine-tested performance reviews
Riders using Rossier Engineering have stood on podiums, won championships, and pushed machines to their limits — all with our components bolted on.
By far the best pipe... I can't believe the bottom end power I have!
ROSSIER ENGINEERING REBEL 4 EXHAUST
By the staff of Dirt Wheels, photos by Daniel Gonzalez
Another Yamaha YFZ450R exhaust test? You bet! Yamaha is a godsend in the sport ATV industry. They continue to produce the legendary YFZ450R, while the rest of the sport 450s have fallen off of dealer floors. That means that aside from the healthy number of Honda TRX450R projects out there, the YFZ450R is the only sport 450 we get our hands on every year to test and upgrade to our liking.
Customer Reviews
