Cobra exhaust review - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 7 (permalink) Old 08-10-2011, 02:42 PM Thread Starter
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Cobra exhaust review

Hey all:

Just wanted to add my .01 cents worth on the cobra exhaust.

My 95 Vn750 came completely stock when I bought it. My riding style is a bit on the higher RPM range (5k-7k) as I really enjoy the "zippyness" of this ride, so your opinions may vary depending on how you ride.

First thing I did was remove the baffles from the stock mufflers. That helped with the tone of the bike but not much in performance.

I then removed the goat's belly and I definitely felt a big difference in the high RPM ranges. Removal of the belly was also accompanied by a set of turned out mufflers with the baffles removed. Left side had a 13" and right ended up with a 19" long mufflers.

All along, I really wanted to Cobra one sided exhaust as this would then allow the rear cylinder the same "length" output as the front cyl.

Thanks to six6six, I finally got my hands on a set of the cobra exhaust. Took a bit of cleanup and some adjusting to get them on the bike and out for a spin. Took it out last night. Although I don't mind the sound (kind of quiet for me), the loss in performance was very disappointing. I'll be drilling them out soon as best as I can as they are also turned out tips making it difficult to reach in. Here's some pics for you to enjoy.

As I got them with one muffler cleaned up a bit



Left side with the stock heat shield installed.



Right side, All done.

Louie

1995 VN750 - Work in Progress
2001 BN125 - Learning Bike
2004 GL1800 - All Done

Last edited by lphernan; 08-10-2011 at 02:47 PM.
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post #2 of 7 (permalink) Old 08-10-2011, 02:55 PM
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What seat do you have on there? I like what you've done to the bike!

No more Vulcan
New ride 2012 Victory hammer 8 ball
Stage 1 with Cobra 2 into 1 exhaust.
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post #3 of 7 (permalink) Old 08-10-2011, 09:53 PM Thread Starter
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Quote:
Originally Posted by Devil_Hwy View Post
What seat do you have on there? I like what you've done to the bike!
Thanks Dev. Appreciate the complement. I found a used seat at a local motorcycle graveyard, cut it down, re-upholstered it and modified mounting brackets myself. Couldn't even tell you what the seat came off of. I was only looking for the size and seat pan to fit what I was envisioning.

Louie

1995 VN750 - Work in Progress
2001 BN125 - Learning Bike
2004 GL1800 - All Done
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post #4 of 7 (permalink) Old 08-10-2011, 10:11 PM
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did you turn the air/fuel screws out 2.5 turns after the install of the new pipes?
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post #5 of 7 (permalink) Old 08-10-2011, 10:24 PM Thread Starter
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Clock: They were already turned out to 2.5 cuz of the old debaffled mufflers. I had to turned them back in to about 2 1/4 turns for the front and about 2 for the back. Front would backfire at 2 turns.

Louie

1995 VN750 - Work in Progress
2001 BN125 - Learning Bike
2004 GL1800 - All Done
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post #6 of 7 (permalink) Old 08-11-2011, 08:47 AM
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I was really happy with mine. While I don't think I saw any real power gains, there wasn't any noticeable loss either.

Got them more for the looks and sound anyway.

Global warming? So what if my kids never see a polar bear. I never saw a dinosaur and I'm ok.
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post #7 of 7 (permalink) Old 08-11-2011, 11:12 AM
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When I put Cobras on my VN I noticed a loss in low end. After doing the ear shave and upping the jets, the low end returned and I was happy with the smoothness and power band. lphernan, you do good work - give your bike the ear shave and 142/42 jets(or 144 mains for riding in the upper RPM range) I think you will be happy.

95 VN750 (eBay)31k+
GL1100 front fender
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Black 750 Spectre handlebars
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WalMart Saddle Bags
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