YFZ450 Rossier Performance Package
Yamaha YFZ450 Rossier Exhaust will earn you 7.5+ peak HP, and 9.5 HP at 10,000 RPM over the stock exhaust! All chassis dyno testing done on a bone-stock engine - with no cam timing changes! In addition, with minor cam timing changes you can expect a 9.0 HP gain peak and 13.0 HP at 10,000 RPM!
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