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S1 or S2 pipes
http://www.kawi2strokes.com/forum/viewtopic.php?f=26&t=13067		 Page 1 of 1
Author:  GUTS [ Sat Sep 16, 2017 8:06 am ]
Post subject:  S1 or S2 pipes
I need a left side and a right side lower exhaust pipes for an S1A. The pipes for both 350's and I think all the 250's will work. As long as they are solid and can be re-chromed they will work. Thanks!
Author:  Jim [ Sat Sep 16, 2017 8:16 am ]
Post subject:  Re: S1 or S2 pipes
Have you seen the differences in head pipe length and expansion chamber shape of stock S1 and S2 pipes on the resource site?

http://www.kawatriple.com/partid/baffle ... arison.htm
Author:  GUTS [ Sat Sep 16, 2017 10:26 am ]
Post subject:  Re: S1 or S2 pipes
Thanks Jim, I'm pretty sure the outer dimensions are the same on the S1, S2 mufflers but I suppose the performance difference the insides have would make the bike run funny if I mixed them up.
Author:  Jim [ Sat Sep 16, 2017 11:35 am ]
Post subject:  Re: S1 or S2 pipes
It's hard to say what the difference would be, but from the looks of the inside of the pipes, the S1 version is designed for a bit higher RPM. The expansion chamber is smaller and the head pipe is shorter.

On the other hand, Denco sold chambers for the S1 and S2, and they were the same part number. :lol:
Author:  wavehog33 [ Sat Sep 16, 2017 8:16 pm ]
Post subject:  Re: S1 or S2 pipes
Pm sent. I have a 73 s1 full set
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