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ATV 4-Stroke Exhausts

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Most Recent 4-Stroke Exhausts Reviews

FMF Factory 4.1 Slip-On Exhaust

FMF Factory 4.1 Slip-On Exhaust

Alan - Jersey It's a FMF what more can I say... "This is my second YFZ. I sold my first one a few years back, and just got myself another used. I ran the Dr.D SS on my last one and was looking into that again but, they changed them so much I hated the way they looked now. So to FMF I went. I've always had great experiences with them on my 2 strokes so I knew I wouldnt be disappointed. And I surely wasnt. This pipe sounds amazing and gives the bike a noticeable power increase. I would recommend it everyone!"
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Yoshimura RS-2 Comp Series Full System Exhaust

Yoshimura RS-2 Comp Series Full System Exhaust

Yoshi - Clackamas, OR Exactly what I was hoping for "I finally got this installed on my 2016 CRF250X a couple rides back along with a JD Jetting Kit (and opened up the top of the airbox). It was annoying that it doesn't come with a new engine to exhaust gasket, but suggests to install a new gasket. Other than that it is exactly what I hoped. The exhaust note is much deeper, not obnoxiously loud, but sounds way better than stock. And I love the power! Feels like I can roll on the throttle over any little bump and raise the front end. I'm not sure I'd say it feels like a completely different bike, but I did think," maybe this is why some people like 450's":-) My bike finally warms up in a reasonable time and idles great (I'll put this in the jetting kit review) where as the stock jetting took forever to warm up and was much more likely to stumble from low rpm's. I love it and would highly recommend but be sure to do the jetting too."
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