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Rossier Rebel exhaust

ROSSIER ENGINEERING REBEL 4 EXHAUST

By the staff of Dirt Wheels, photos by Daniel Gonzalez ROSSIER ENGINEERING REBEL 4 EXHAUST 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. We have been on an exhaust kick…