CBR 900RR 1993 - 1999 Honda CBR 900RR

Undertail exhaust

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Old May 1, 2008 | 03:44 PM
  #11  
900FighterRR's Avatar
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Default RE: Undertail exhaust

I would stay away from this mod unless you have the Single Sided Swing arm conversion. I built an undertail system on my 95 using a Leo Vince can last year and used it all summer. I ran the pipe in between the rear shock and swingarm with about a 1/4 inch of room to spare either side. The system worked well and sounded great but I found that with hard riding the side loads on the rear suspension would cause the shock spring to rub the exhaust and thats not something you want. Also,the seat gets a lot hotter than you would think, plus the battery is just too damn close. Keep your life simple bro, its more trouble than its worth.

[IMG]local://upfiles/2815/86022F6C4D444A13BB4F275E29E78902.jpg[/IMG]
 
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Old May 5, 2008 | 11:24 AM
  #12  
exz5string's Avatar
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From: Grass Lake, MI
Default RE: Undertail exhaust

Looks good though, nice job.One concern I did have was the heat factor, I can definately imagine it gets hot, did you add any heat barrier on the underside of the plastics? The Wolf systems i looked at cost way to damn much, if I was to do it, I'd do it myself.
 
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Old May 5, 2008 | 06:03 PM
  #13  
900FighterRR's Avatar
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Default RE: Undertail exhaust

Thanks dude. You'de be right about the heat...it sucks. Its not like your *** is burning but I could feel it after about 40 minutes through my corbin seat. Plastics never had a problem with the heat, the battery box on the other hand started to melt a bit and that really worried me because the battery cannot deal with thatkind of heat. That coupled with the shock spring rubbing made me rethink the setup and I went with a SS2R this season just to save the headache. I wrapped the whole deal with the fiberglass header wrap and you could touch the pipe while the bike was running it was all just too tight. If you don't have a single sided swing arm your only going to waste your energy, take my advice. Go with a regular system or if you want something trick get a GP short tip. Good Luck.
 
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Old May 26, 2008 | 07:43 PM
  #14  
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Default RE: Undertail exhaust

I did an undertail exhaust last summer and I haven't had any problems. I took a full two brothers exhaust and ran it right up the middle, of course I had to cutom cut and weld. I modified the battery box a little and put some high temp rubber in and around it to protect the battery. I also painted the pipe with ceramic paint and I haven't noticed the seat any hotter than it normally is.
 
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