I've had this exhaust system for over a month now and it sounds great. I have it installed on a klx140l Very deep throaty sound. Fitment wasnt 100% but with alittle tweeking, it fits fine now.
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way better than the powercore 4
put this on my first dirt bike 2004 ttr125l
This thing is amazing!! It makes my pit bike sound like a 450! Sounds incredibly good! If you want an exhaust for your pit bike.. This is the one!!
really easy to install! My kid was smiling ear to ear when he heard his new bike.
I love this exhaust system!
Great price, fast shipping, super easy install just don't forget spark arrestor if in cali.
Put this on my yz250f and was expecting only the best when spending 600 on an exhaust. Let me tell you. Best investment I could have made. Gives the bike a completely different sound and you can feel the power it adds on. You get what you pay for. Couldn't be more happy.
I have this set up on my 06 yz250f and it is absolutly amazing. The power gain from it is definitely noticeable over the stock exhaust. Fmf is the only way to go for the best performance exhausts out on the market. This exhaust system also gives the bike a different look. This is a great buy for your bike if your looking to add some more power to your bike.
bought for a2008 crf 450 stronger mid-range revs a little longer on top .fit with no problems did not have to rejet
Yes the 4.1 is a higher flow and considered a racing exhaust.