Finally! A use for spare parts! - Wrist Twisters
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post #1 of 7 Old 05-30-2020, 04:29 PM Thread Starter
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Finally! A use for spare parts!

I've had 5 different 919s over the years and have some random parts laying around here and there. My 2008 XT250 had a stock exhaust that was surprisingly obnoxious, so I grafted on a stock 919 muffler. It works PERFECT. The bike is now in stealth mode and the rejetted carb and opened up intake all work in harmony. It has the oomph of an aftermarket exhaust without any of the noise! Please don't zoom in on the welds... Between my $150 harbor freight welder and my $3 education it made for an afternoon with the grinder and black paint. I even took off the stock heat shield and welded the brackets onto the 919 muffler for an oem look.
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1985 Kawasaki GPZ900r
1999 Honda CBR1100XX
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2008 Yamaha XT250
2003 Kawasaki Ninja 500
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post #2 of 7 Old 05-31-2020, 08:24 PM
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More power and less noise at the same time? Sounds like sorcery. How does the weight compare?

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post #3 of 7 Old 06-02-2020, 02:26 PM
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Improvise excellence !!!!

I said I never had much use for one.
Never said I didn't know how to use it."
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post #4 of 7 Old 06-04-2020, 10:43 PM Thread Starter
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Originally Posted by Sckill View Post
More power and less noise at the same time? Sounds like sorcery. How does the weight compare?
Each muffler weighs about the same. I think the XT muffler was a little heavier but overall negligible change in weight.

I might use the other 919 muffler for my klx250. the FMF powercore is nice but LOUD.

1985 Kawasaki GPZ900r
1999 Honda CBR1100XX
2006 Kawasaki KLX250s
2008 Yamaha XT250
2003 Kawasaki Ninja 500
2001 Honda Shadow 750 ACE
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post #5 of 7 Old 06-05-2020, 05:32 AM
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Quote:
Originally Posted by Sckill View Post
More power and less noise at the same time? Sounds like sorcery. How does the weight compare?
It makes sense. The muffler is designed for 459.5 cc's, so it will be less restrictive when dealing with half that. And very quiet. A creative solution!

Rob

If it has already been done, it is safe to assume it is possible to do it.
On the other hand, if it has not been done never assume it is impossible to do it.
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post #6 of 7 Old 06-05-2020, 11:32 AM
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I'm planning to do similar to my DR650 one of these days with a 'busa muffler. I'm cheating, though, because it's already a tried and tested mod. Kudos to you for using what you had on hand to make a desired change. For mine, it'll be a significant weight reduction from stock. The stock unit on these bikes is pretty heavy; people often call it the 'Buick' muffler.

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post #7 of 7 Old 06-22-2020, 10:48 AM Thread Starter
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I'm planning to do similar to my DR650 one of these days with a 'busa muffler. I'm cheating, though, because it's already a tried and tested mod. Kudos to you for using what you had on hand to make a desired change. For mine, it'll be a significant weight reduction from stock. The stock unit on these bikes is pretty heavy; people often call it the 'Buick' muffler.

Sent from my SM-G965U1 using Tapatalk
One of my best friends has a 2013 DR650 that we put a yoshi pipe on, cut the top of the airbox, and used the ProCycle jet kit. It woke the bike up significantly but she certainly thumps. We might have to surf ebay for a busa muffler and have another day of hackery to make his quiet again. Thanks for the idea!

1985 Kawasaki GPZ900r
1999 Honda CBR1100XX
2006 Kawasaki KLX250s
2008 Yamaha XT250
2003 Kawasaki Ninja 500
2001 Honda Shadow 750 ACE
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