I have a SuperTrapp EAR on my '93 XR600R and am quite happy with it. The
main reason for choosing the EAR was it's quiteness compared to the
Racings Series and Megaphone models. In my opinion the other models
take away too much of the low end and are WAY to loud for trail
riding. The EAR is a bit louder than stock, but gives much better
top end and revs.
An extra benefit of the EAR is that is can be easily converted into a
Racing Series (replace the core or punch out part of the baffle).
Ron Urman
ur...@filenet.com
Tom Gimer
1990 XR600R (w/baja designs conversion)
1993 CBR900RR
1994 ZX-6E (for sale--e-mail for details)
FMF is supposed to have a new 4-Stroke exhaust system being released on
October 1st. It is to have an oval silencer which only makes sense to me..
anyhow they are supposed to be quite good from what I hear... will be
waiting to see what they look like before any new purchases...
Mikeee P
By the way, this is a street legal XR650L... they should be illegal, the
thing is like a little wheelie king, and it is a major rear brake slider
on the street! LOL
I'm gonna get in trouble on this thing.... it's a giggle a minute! MP
OK, read my lips: Supertrapps are TOO LOUD for anything other than closed
course competition. While they are a decent pipe (and you will have to
rejet your main jet) their noise level is unacceptable, even with the
E.A.R. insert (which doesn't last long)! The four-stroke motor produces
a sound that travels farther too. Plus, the sound is directed out at 360
degrees. I've got a Cobra ISDE muffler for my XR and it's too loud
also, though it's quieter than the Supertrapp. I personally use the
stock muffler with the Thumper Racing insert. This unit allows the bike
to breath better and points the exhaust down - away from the
non-motorcycling publics's ears.
I'm not trying to flame you, it's just that we ALL need to start
rejecting the idea that loud pipes are faster. Noise annoys.
There, I'm done.
-Tom Niemela
The stock pipe is designed very well. If you want the best
power increase with a minimum amount of noise increase. I
would go with one of the aftermarket baffle replacements.
I have used thumper racing's stealth insert, White Brothers
makes something similar to it (I think they call it a "hot tip".)
jeff
--
Jeff Dunham 1995 XR300R
jdu...@wv.mentorg.com
I agree with Tom in regards to the noise issue. I orginally purchased a
WB Megalloy pipe because I had this ridiculous thought to MX my XR.
Now, this muffler gave quite a bit better hit on top at the expense
(very minor) of some low end and it is a few pounds lighter and better
looking than the stock pipe BUT a few things have become evident:
1.Unless the motor is really uncorked and the pipe is run as a straight
megaphone (without the disks) the benefit of mo power is not worth the
auditory nerve damage and hit on the wallet. Of course this motor setup
would be the hot ticket during race time but when you are monkeying
around on Forest service roads during elk season and some hunters hear
you from a couple miles away, that appeal kinda goes PooF.
2.The noise emitted is wonderful for scaring the crap out of wildlife
for miles on end in any direction. My buddy took my bike off for a
little jaunt while I hung around the truck and that big ole XR just
thundered and echoed all around the mountains we were in. It was sort
of like that scene from Time Rider where that old Mexican dude hears
that bike coming down a wash and thinks its El Diablo.
The stock pipe, uncorked is good enough and with that little insert in
its not so offensive to the ear. Though, a full on raging thumper on an
MX track is right on.
richard...
The Thumper racing baffle is a better alternative than the Supertrapp.
Power output with the baffle is nearly equivalent on top, with better low
end response. Sound output is 92 db compared to 99 db with the
Supertrapp. Frame flex in the XR will eventually break the lower
mounting boss out of the Supertrapp tailpipe. Not only that, it's much
cheaper at $69.00 from Baja Designs (800 422-5292).
Happy trails,
Alan
>
>The Thumper racing baffle is a better alternative than the Supertrapp.
>Power output with the baffle is nearly equivalent on top, with better low
> end response. Sound output is 92 db compared to 99 db with the
>Supertrapp. Frame flex in the XR will eventually break the lower
>mounting boss out of the Supertrapp tailpipe. Not only that, it's much
>cheaper at $69.00 from Baja Designs (800 422-5292).
>
White Brothers also sells a similar insert. I don't have any experience
with it, but it cost about the same, and looks much better than the Thumper
Racing model (what ever that is worth). It has a very nice looking aluminum
section that extends the silencer about an inch beyond the end of the pipe.
I eventually plan to buy one for my 650L.
-------------------------------------------------------------
Bruce Arnold Honda XR-650L 1993
Gurley, AL (Huntsville area) KTM 250-T/XC 1992
br...@hmi.com Honda XR-100 1992 (wife's)
Tom
I tried passing an ISDE sound test with a supertrapp end cap. I
thought
I could pass with 10 discs. I ended up with 3 discs to pass (94db) and
the bike would barely run. The next event I ran the stock pipe with
the thumper insert and easily passed the sound test.
This year I bought a yoshimura pipe because it was the best pipe that
I could find with a rear exit and screen type spark arrestor instead of
the "send the sound everywhere" supertrapp end cap. Les at LTR modified
the pipe for me internally to produce more power and reduce sound
output.
And no, I won't tell you how...
BTW, I saw that sudco makes a pipe very similar to the Yosh (looks
identical) at a much lower cost. They also make a larger header to
go with it... Made me wonder whether Yoshimura actually makes the
pipe at all...
XR600's respond well to free-flowing pipes. Most of the gain will be on
the top end and you WILL notice it! Don't forget to richen the main jet a
size or two. I've run SuperTrapps and Thumper inserts and believe the
Thumper solution is cheaper, quieter, and will produce more horsepower
for the equivalent sound level.
Happ Trails!
:
I've got a Supertrapp EAR on my XR250L noew, with 10 discs. The
bike runs fine, and I like the weight loss over the stock pipe.
But with 10 discs, it's too LOUD!
Does anyone know how many discs the Supertrapp would take to
equal the sound level of the Thumper insert? That is, would
the Thumper insert give me less sound, with equivalent per-
formance? If it would, I'll buy one.
--Leslie
: Happ Trails!
Happ Trails!
:
> I've got a Supertrapp EAR on my XR250L noew, with 10 discs. The
> bike runs fine, and I like the weight loss over the stock pipe.
> But with 10 discs, it's too LOUD!
>
> Does anyone know how many discs the Supertrapp would take to
> equal the sound level of the Thumper insert? That is, would
> the Thumper insert give me less sound, with equivalent per-
> formance? If it would, I'll buy one.
>
> --Leslie
>: Happ Trails!
I don't know about being equivalent to a Thumper insert, But I've got
an EAR on my XR200R with 6 discs, and its QUIETER than stock, but much
more powerful...
Bob
It takes three to four discs to get you down to 94db. I know
I failed the sound test several times at the Idaho Qualifier
last year.
I would try the new turbine type spark arrestor that can be
used in place of the supertrapp disc pac if you want to
run the supertrapp (or any other pipe that uses one).
Let me know how it works...