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Suzuki LTR450 Rossier Exhaust adds an extra 10 horsepoewr with the airbox lid off and the cherry bomb installed.
Suzuki LTZ400 Rossier exhaust with the airbox lid removed adds +6 HP at 7000RPMS and 7.5hp at 8500RPMS over the factory setup.
Honda TRX450R comes from the factory with a respectable 38 HP, but with Rossier exhaust and a stage II Hotcam and a drop in air filter, almost 50 HP is attainable.
Yamaha YFZ450R Rossier exhaust really wakes up the fuel injected YFZ. The Rossier Exhaust increased the peak power from 38 to an honest 47hp at the rear wheels. The Rossier exhaust also completely eliminate the stock sag at 3800 RPM that is present with the stock pipe.
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!
Can-Am DS450 Rossier exhaust and a cold air kit have given this already powerful quad a 6 H.P. gain at the previous peak of 7800 RPMs and a staggering 9 H.P. gain at 9,000, where the stock pipe has already fallen off. This means 1 less shift down that long straightaway. From 3,000 RPM to 7,000 RPM your are getting 4 to 7 H.P. across the board, and the torque peak has gone from 28 FT. LBS to 33! All this with just a pipe and filter.
Yamaha Raptor 700 -Rossier exhaust gives a brutal acceleration gain over the stock exhaust. At 5900RPMS you'll gain 10.5HP and at 7500 RPMs you'll gain 16HP.
Kawasaki KFX400 Rossier exhaust with the airbox lid removed adds +6 HP at 7000RPMS and 7.5hp at 8500RPMS over the factory setup.
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