May 14, 2013(Scottsdale, AZ)
The fit was okay and was easy to install. I like the lower end power gain without being obnoxiously loud. I matched it with the mega-bomb header at the same time. After taking it out a few times it was time to re-jet. Very happy with the results!
September 24, 2012(Houston, TX)
love it just got it on the bike a few hour ago and love sounds good and looks good love it.
September 17, 2012(toledo, OH)
This pipe was easy to install and did not seem to take away any power. It did also make it a lot quieter. Overall very satisfied.
August 15, 2012(edmundston, NB)
Best mod i ever did...Period! day&night difference...perfect fit & finish, very satisfied!
It works like it should
August 15, 2012(Granby, CO)
Easy install, sounds great on my TTR, and it did add some low end punch.
May 01, 2012(Dover, AR)
The Q4 is a great muffler and the sound tone is good. Very deep and throaty but I wish it was a little quieter.
April 19, 2012(Amarillo, TX)
I installed this on my 08 YFZ 450, it was super easy and fast to install, love the sound now, performance boost too. Was worth every penny
March 16, 2012(West Plains, MO)
Works great, sounds great = no complaint!
Added a Megabomb and FMF programmer and there was a noticeable difference. Highly recommend!
February 09, 2012(Tucson, AZ)
It's not too loud and has a better tone (stock sounded like a lawn mower). I made too many other changes at the same time to say anything about performance.
q4 on a dr 200
Doug D. -
September 27, 2011(oakridge or, OR)
Everything was cool except why do you say this pipe is for a 2009 or 2010 when it fits perfect on my 2004 maybe you should check your application. Thank you.