Seems pretty cool !
But i think we all want to hear that new sound, man !
But i think we all want to hear that new sound, man !
OEM XSR 700 Exhaust Mod
I modified a stock exhaust that I bought (cost me 50€ on eBay).
1) you cut the muffler with a grinder (you just need to cut at this place. No need to open the muffler like in the picture)
2) you cut the pipe inside (with a grinder)
3) you cut the external pipe (with a grinder)
Then, you just have to :
- Remove the internal pipe
- Make a weld on the outside of the muffler
- Weld a bigger external pipe (40mm)
The sound is whaooooo ! For only 50€ (thanks to my friend who make the welds !)
The last pic is the stock Exhaust without any modification. See the difference of diameter !
1) you cut the muffler with a grinder (you just need to cut at this place. No need to open the muffler like in the picture)
2) you cut the pipe inside (with a grinder)
3) you cut the external pipe (with a grinder)
Then, you just have to :
- Remove the internal pipe
- Make a weld on the outside of the muffler
- Weld a bigger external pipe (40mm)
The sound is whaooooo ! For only 50€ (thanks to my friend who make the welds !)
The last pic is the stock Exhaust without any modification. See the difference of diameter !
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Here is a short video 
It's difficult to really realize the sound because I made the video with my iPhone.
It's much louder when you are near the bike...
https://youtu.be/PhYz-Uw-4Ek
It's difficult to really realize the sound because I made the video with my iPhone.
It's much louder when you are near the bike...
https://youtu.be/PhYz-Uw-4Ek
Absolutely nothing except good sound
I did this at the weekend - chopped up a spare MT07 exhaust I got cheap, and TIG welded a new larger diameter stainless outlet pipe back on.
what I hadnt realised until 2 weeks ago, the previous owner had drilled holes next to the outlet - covered up by the shroud, I could see them. This is a terrible idea because you then have both the regular pressure pulses going through the full system, and also shortened pressure pulses bypassing one of the baffle chambers.
So anyway, I welded them back up.
Obviously it was then quieter but much more importantly, the engine felt a lot smoother at low revs. So backing up the theory that messing with the exhaust pulses in the silencer is not a good idea!
Anyway, swapped the stock system for my modded system on Saturday, and took it out for a 100mile blast yesterday.
The smoothness is still there, economy hasn't suffered, and the downpipes are still a nice straw colour - so I think the fuelling is fine with it.
more importantly, it sounds excellent! and cost me £35 for a spare exhaust system!
what I hadnt realised until 2 weeks ago, the previous owner had drilled holes next to the outlet - covered up by the shroud, I could see them. This is a terrible idea because you then have both the regular pressure pulses going through the full system, and also shortened pressure pulses bypassing one of the baffle chambers.
So anyway, I welded them back up.
Obviously it was then quieter
but much more importantly, the engine felt a lot smoother at low revs. So backing up the theory that messing with the exhaust pulses in the silencer is not a good idea!Anyway, swapped the stock system for my modded system on Saturday, and took it out for a 100mile blast yesterday.
The smoothness is still there, economy hasn't suffered, and the downpipes are still a nice straw colour - so I think the fuelling is fine with it.
more importantly, it sounds excellent! and cost me £35 for a spare exhaust system!
Yeah, but they got what they were looking for - more noise.what I hadnt realised until 2 weeks ago, the previous owner had drilled holes next to the outlet - covered up by the shroud, I could see them. This is a terrible idea because you then have both the regular pressure pulses going through the full system, and also shortened pressure pulses bypassing one of the baffle chambers.
So anyway, I welded them back up.
Obviously it was then quieter
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