| uh.... this is not true. 4 stroke pipes take into account almost the same amount of flow dynamics calculations. the way the pressure and flow work together is just as important in a 4 stroke. mega/power bomb anyone? im not going to argue anymore, point is an exhaust system is very very important. it is a very considerable hp gain compared to most mods and you can still keep it quiet and gain power.
__________________ --'03 CRF450r--
--FMF Pipe, Pro-Tech Revavle--
--Vortex Basket With Tusk Disks And HP Springs--
--Pro Taper Triple Clamps And Bars--
--Devol Full SP With Moose HGs--
--Renthal 13/50 With R1 Chain--
--Now It Is The End, Probably...--
--'06 CBR F4I--
--Bone Stock--
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