440+stock exhaust

[Plante400]

Well i am starting to hate my PC4 cuz it fits onto the stock header lke CHIT

and i was just wondering if it would be ok to run the stock exhaust with a 440 for a while without having any problems or power loss??

[jonc623]

you should lose power and you will have to rejet but you can run it

[400exredrider]

youd pry be very dissapointed with the power

[cals400ex]

i have found slip ons do little for power on built motors, even with a stock head. however, i do mainly high rpm riding. you will probably sacrafice some but i bet not too much. it will probably feel like you lost more than what you really do from the quite exhaust that doesn't vibrate much.


if the header is really loose, go buy the exhaust gasket that is supposed to be in there. a stock one will work just fine. it will be really snug then.

[Plante400]

thanks man. no idea you could get those


i always made my own with gasket maker

[cals400ex]

here is the part number:

18392-MK4-000 GASKET, MUFFLER 99-02

18392-HN1-A20 GASKET, MUFFLER 03-04