CBR 900RR 1993 - 1999 Honda CBR 900RR

Kerker exhaust (bolt/slip on)

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Old 03-14-2010, 09:07 PM
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Default Kerker exhaust (bolt/slip on)

hey guys

I have a 99 900 RRX. It came with a Kerker Bolt on exaust canister. It had a good deep tone, opened up in the mid range with more volume but I wanted a bit more volume and more rasp, sooo....

The other night I went out (without my camera <kicks own @ss>) and I pulled it off and apart and cut 4 inches out of it.
It was a pain in the rear getting the bolts drilled into the outside to bolt things back together afterwards.

but what I did when I had it apart was, pulled the canister apart, removed all the packing from the core. Measured and cut 4 inches off of the outside. Then I cut 3 inches from the inside "perforated pipe". I wanted to flare one end of the core so the 2 pieces could slip together. Not having much to work with, I used an old wodden hardball bat and forced the core down the bat till the other half would slide inside.
I wish this had have been planned better because I would have used new muffler packing, so I just shortened the piece I took out an rewrapped the core. Then slid it all back together bolted it back up and voila, DONE!

It's not a bunch louder, pretty close to the same really but now when it hits about 4500 rpm and above, it gets a great midrange rip, the rasp is there but it's not obscene.

I'll see if I can find a before picture and I know I can get an after pic
 
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