this is a great filter, I have it on my 2007 honda crf 250r and it doesnt let anything in as long as you clean and oil it with K&N spray very free flow and makes a noticeable difference.
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K&N filter is great! You feel the change in HP. Kind of a pain to install.
I installed this k&n air filter on my 04 yz250 and noticed minor power gains, plus it's a breeze to clean and very durable.
Bought for my 08 crf450r and it increased throttle responsiveness. Great filter.
Shipping was timely, installation was easy, and performance is great! I would recommend this filter for a YZ250 all day!
Highly recommend. increase in throttle response an sound.
this is the best looking air filter ive had in my bike the colors match the bike perfect and all that and fits just right only problem is ive noticed it took my bike down about 4.2/3 horsepower so i would just stick with twin air this is only good if your lookin to show off your ride
A excellent upgrade, to any bike. Would suggest purchasing KN filter oil with this product.
I would definetly recommend this product. Not a gigantic power increase, but I could definetly tell some difference from my old foam filter.
i bought the powercore 4 slip-on and purchase the powerbomb header separately, which made a full system. I purchased the K&N filter to compensate for the added exhaust, so i then had to re-jet and went with a FMF (DJ) jet kit. the K&N filter added incredible amounts of air flow and was easy to install, it lasts longer between cleans, and is very mess free when washing and oiling. with the combo of these three items my bike rips!