Removing GB500 baffles?

[ThumperHeaven]

Hey there
I am thinking about removing the baffles on my GB500's exhaust. Has anyone done this to their GB and if so did the bike require retuning? I read that the bike may lose power but I have also read other forums that say it made the bike sound great - which is what I'm after. Was considering replacing the whole muffler but would prefer it if I can leave the original muffler on but make improvement to its note and performance. Cheers

[motorbyclist]

typically you'll lose performance moreso in the lower end, and run a bit rich.

removing baffles can be done in any number of inventive ways, typically all of which are destructive - steel rod+hammer, hole saw, large drill, whatever butchery seems suitable

[ThumperHeaven]

cheers thanks for that. Have decided against this. Am once again keen on the bore out to 600 and replace the whole exhaust. Time to start saving!!

[Dodgy]

I removed mine by buying an old one from the wreckers, removing the three rivets in the end and then removing the inner contents completely.

Holy shit, what a noise! Reverse megaphone ala bogan. Fantastic fun in the Mt Vic tunnel where a real burst of throttle has pedestrians covering their ears. Jetting was ok, but I also have a Mikuni 41mm flatslide and K&N

[fridayflash]

i did the same on mine...drilled the rivets then put a scissor jack handle
hook bit in the baffle opening and yanked it out.... made a nice deep
thumping tone and not at all raspy or harsh...bearing in mind there is still
a baffle in the box muffler under the motor, i had no noticeable loss
of power in the low to midrange as these motors have plenty anyway
but i did manage an extra 10km/h in top speed... easily able to reach the
ton.
ive now got a stainless reverse mega and headers made by custom chambers
eliminating the heavy underslung box and twin wall headers etc
thus saving a lot of weight
but to be honest i far prefered the original system for sound and performance
(i will need to modify airbox a bit and adjust jetting to suit the new pipe)
i say rip into it...especially if your going to mod it later

[Pinstripe]

I have a megaphone with removable baffles on my GB, intended for the cb400f I think, makes a proper bloody racket :2thumbsup