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4-Stroke Exhaust4-Stroke Exhaust from Rocky Mountain ATV/MC
Exhaust systems in either full race or with tuneable spark arrestors and different tips to give you that perfect power output for either motocross or trail riding.
Latest UTV 4-Stroke Exhaust Reviews – You could win up to $500 for reviewing products!
Lexx MXe Slip-On Silencer With Mid-Pipe
Justin in MI
kfx400+lexx=superkaw
the lexx exhaust fit perfectly on kfx400, did it in about 1 hour, sick gains in power and sound, thanx rm
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HMF Racing Competition Series Silencer
Lucas in NY
Assembled quick, sounds great and can feel the HP
I have had this installed for about a week now and i love it! I havent tried the other 2 stages, but it comes with nothing but the spark arrestor in it. Mounted pretty easily and lined up about perfect! I would advise the HMF Optimizer as well if this pipe is going on an EFI. If not there will be a slight bog but nothing giving throttle cant fix. On a 2010 YFZ 450X
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Vance & Hines Ti-Pro Complete Exhaust System
Marc in WY
Great exhaust system
Installed on my 08 yz450f fit and finish excellent. Sounds about the same as my factory short muffler 08. maybe a little louder. has better mid-range response and revs quicker. Looks great after a couple hours of riding- turns blue. overall I am happy with it. Would recommend getting a guard for the head pipe though, none comes with and like factory easily exposed to damage.
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Yoshimura RS-2 Stainless/Aluminum Slip-On
Ann in IN
Badass
It is the best exhaust i have owned it is on a 2007 400ex and looks and sounds great i had a big gun evo before this and it broke after a week of use this is one hell of a product go YOSHI.
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Yoshimura RS-4 Stainless/Aluminum Full System
Terrence in Nevada
awesome exhaust system, Great quality
Before I installed this exhaust my Yz450 the bike Felt like it lagged a little from the bottom all the way to the top, but especially on top. After I installed this system on my bike the power just seemed to pull forever, excellent torque. Mine even came with the spark arrestor which is removable with one bolt. The aesthetics of this exhaust are great for the price. Very durable system, I have been using this exhaust for about a year now and have not one complaint what so ever. I really believe Yoshimura didn't cut any corners when they designed this product. Also has a nice mean sound to it with out it being obnoxiously loud. Again great product definitely give it a try.
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LeoVince SBK LV One EVOII Stainless Steel Slip On
CHRIS in CA
Nice looking but install is a pain
Leo Vince makes good stuff no doubt about it. The SBK stainless steel kit is the one for a '11 KTM 990 ADV. This kit includes the mufflers and new mid pipes. Meaning you have to remove the stock mid pipe. It was necessary to remove the plastic side plates (easy) and the unbolt the sub frame and slide it back an inch or two, not so easy. Be sure to remove the graphite gaskets off the header pipes so new mid pipe the fits the header. The mufflers are well made but not much lighter than the stock. At least the cat elements are out and the mufflers will run much cooler. Everything fit well. Get every thing mounted before thightening thing down. The Leo Vince looks and sounds great but I kind of wish I had purchased the FMF Q mufflers. FMF mounts to the stock mid pipes so much easier install. Additionally, the FMF mufflers are aluminum and much lighter.
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