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Comments On Feb 15, 2013:Much quieter than stock. Looks good, sounds good, easy to install, fit was perfect. Cannot tell any increase in performance.
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Comments On Aug 14, 2012:I fitted this pipe to my 03 wr450f not only does it look good but it sounds great and it only took 3 days to get from Utah to me in Scotland thanks rockymountain, awesome.
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Comments On Dec 24, 2011:Makes great power even with spark arrestor in, looks great to. Will start to blow packing around 40hrs, this clog your spark arrestor so be sure to check and re-pack. Just allens bolts to remove for re-packing, not rivets, nice!
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Comments On Jun 30, 2011:LOOKS GREAT. FIT WAS PERFECT. TOOK ABOUT TWENTY MINUTES TO INSTALL. SOUND SEEMS TO BE A LITTLE QUIETER THAN STOCK.COULDN'T TELL ANY PERFORMANCE CHANGE ON MY 2009 KX250F. IM GOING TO PURCHACE POWER BOMB HEAD PIPE NEXT.
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Comments On Apr 14, 2011:I have had this on many bikes never disapoints. Lots of low end power. Great sound also; very throaty
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Comments On Jan 16, 2011:loved the sound and horse power it put out
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Comments On Jan 06, 2011:FMF ALWAYS GREAT PRODUCT AND ROCKYMOUNTAIN OFFERS AT A LOW PRICE HAVE BROUGHT 3 DIFFERENT SLIP ON ALL FMF THRU RM AND HAD NO PROBLEMS
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Comments On Aug 10, 2010:I bought this for my wr450 07 and I'm still use since 1 year very happy with the performance. The bike revs better, sounds better, and looks better. It's easy to install.
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Comments On Jul 12, 2009:For $750 and a company that's been around for as many years you'd think you would get some better quality in a pipe. Springs that hold on the header are either falling off or rubbing against the pipe and denting it, can't get a good seal with the mid pipe(keeps sliding in and out)and the spark arrestor screw stripped out the first time I used it when tightened about 1 foot lbs. Not happy, going to get rid of it and buy a Pro circuit or something.
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Comments On Jul 09, 2008:Wow! I bought this pipe for my 07 Yz450 and this thing is very pretty pipe. The performance is wonderful and it makes a torn up bike look better. I mostly bought this pipe because of the spark arrester but I'm very happy with everything.
Additional Comments On Jul 27, 2008:Several hours on the slipon. Its holding up well. The blue is turning colors though so that is a little bit dissapointing. Its getting lighter blue from getting hot. I decided that it didnt deliever as much power as what I wanted so I ordered the FmF Powerbomb header to go with it. That made it all worth it. Great combo. You must buy it if you want to see what your machine can do.
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