check out
http://www.peterrenner.net/exc
be patient while downloading and please ignore the mess seen in the background
(btw. i was too busy lately to cut off the
remaining unused EXC tab and to finish up
the load bearing one)
I had an 520 EXC muffler welded onto an Arrows pipe.
The pipe fits more or less nicely onto the stock header.
At first i tried to use a spring like attachment like KTM, but this proved too loose, as the WR offeres only one point to support the muffler, whereas the KTM has two.
Effect:
up to mid rpms very stealth, no problems pull ing up to the traffic light near the cops at 2 AM. Beyond mid rpms the sound turns more into an XR600-w/out-baffle style, only less noisy.
Biggest plus:
Better throttle response down low.
Biggest drawback:
Muffler need repacking
cost (incl. 20% Austrian sales tax!):
$240 EXC muffler
$100 Arrows stainless steel mid section
$50 welding
not counting the DIY sawing and rivetting
HTH
Rowdy
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Rowdy, WRZ400EXCbrc '98