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[QUOTE="Tony Eeds, post: 1184850, member: 32023"]
DT:

This is, at best, an ongoing evolution (revolution?).

Do you have a preferred can supplier that you like?  Bug them about quieter exhaust.

FMF has stepped forward to address the issue and developed the Q and the Q2.

I have a Q on my XR650R and liked it at first.  I'm fairly certain it exceeds the 96 dB level at this point, but do not personally have a sound meter to measure it with.

My reference in the post above was a story about a CRF450 that "complied" when new, but blew 100 dB after 20 hours of track time.  100 dB is a huge jump from 96 dB, because it is a logarithmic scale.

I asked about the 150s that I have heard about as being loud.  Cris indicated that it is exhaust speed as much as anything.  There is just very little pipe to work with.

The AMA is finally addressing the issue for closed course competition, so this will push the pipe manufacturers even harder.  It is a phased change though, so expect it to take a few years.
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