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12-18-2011, 11:20 AM
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ATV Enthusiast
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Member #14603
Join Date: Apr 2011
Location: Canada
Posts: 44
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K & N Air Filters
Good Day All,
So I have been thinking lately about installing a K & N air filter on my 2011 Polaris Sportsman XP 550. Just wondering if anyone has any comments or suggestions on these types of filters in ATV’s or would it be better to keep an OEM?
I have one installed on my truck and think it works great, just wondering about the ATV world.
Thanks,
IKEA 
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12-18-2011, 11:47 AM
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Polaris ATV Legend
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Member #6579
Join Date: Aug 2010
Location: Central Connecticut
Posts: 3,114
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YUP!
The best advice I can give you is to tell you to but a UNI Filter and forget about the K&N...
CW
__________________
Mine
2007 Polaris Sportsman 700 EFI W/ 26" Maxxis Big Horns, Crusher Black alloy rims, EPI clutch kit, EPI HD springs F&R, Moose front/Ricochet rear CV guards, Kolpin Aux 4 Gal fuel can, UNI air filter, Moose camo tank bag, F&R rack extensions, Lock-N-Ride lo & hi windshields, Acerbis hand guards, CUSTOM mirrors and a 3000# Gorilla winch, W/Am-steel blue synthetic line, running thru a winch saver and an aluminum fairleed.
NEW: Thor's foot pegs and CUSTOM rear rack support frame and WES seat box. CUSTOM front and rear mud flaps.
Momma's
2000 Polaris Trail Boss 325 W/23" Wooly Bogger rear tires, Powermadd hand guards, UNI filter, Big Dawg rear and side bags, Polaris Mirrors, Kolpin grips, Quad Boss tank bag, Gas tank fuel gauge, Custom front 12v power port, Dual 1.5 Gal Kolpin fuel cans, mounted in custom rear facing mounts and a 2000# Super-Winch in a custom built mount W/winch saver.
CALL Thor @ www.TheATVSuperStore.com - 815-321-3888
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12-18-2011, 12:57 PM
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Extreme ATV Enthusiast
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Member #13071
Join Date: Mar 2011
Location: Carsonville
Posts: 398
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100% Uni foam filter over the K&N I wouldnt put a K&N filter on any atv
__________________
04 Polaris predator 558 Flat track quad
04 Polaris predator 500 trail build(in the works)
started life as a replacement frame so a ground up build
Build predator and outlaw lowering kits
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12-18-2011, 12:59 PM
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Extreme ATV Enthusiast
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Member #19332
Join Date: Oct 2011
Location: Red Deer, AB
Posts: 344
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Quote:
Originally Posted by joshr08
100% Uni foam filter over the K&N I wouldnt put a K&N filter on any atv
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Why is that?
__________________
2011 Sportsman XP 850 EPS
Nicknamed "KATT" (Kickass All Terrain Toy)
Polaris Lock & Ride Front Storage Box
Polaris Lock & Ride Rear Storage Box
Polaris Deluxe Front Brush Guard
Polaris Deluxe Rear Brush Guard
Polaris Handle Bar Guards
Polaris Lock & Ride Back Rest
Polaris 3500lb Winch Kit
Polaris Winch Accessory Kit
Polaris Wireless Winch Remote
Polaris Trailerable ATV Cover
Polaris Hand Warmers
Polaris Thumb Warmer
GoPro HD Helmet Hero Camera
"I fire up the willing engine,
Responding with a roar.
Tires spitting gravel,
I commit my weekly crime..."
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12-18-2011, 01:00 PM
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Extreme ATV Enthusiast
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Member #13071
Join Date: Mar 2011
Location: Carsonville
Posts: 398
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Uni foam filter stops so much more dirt. With about 99% of all atv use being in the dust and dirt the K&N lets way to much junk through and that clugs up carbs and wears out reeds and valves.
__________________
04 Polaris predator 558 Flat track quad
04 Polaris predator 500 trail build(in the works)
started life as a replacement frame so a ground up build
Build predator and outlaw lowering kits
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12-18-2011, 01:10 PM
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ATV Enthusiast
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Member #10666
Join Date: Jan 2011
Location: LANCASTER PA
Posts: 52
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I have had k-n filters on my atv's for years without problems. I do have a prefilter on it and ride in alot of dust! Rarely do I find dust on the filter the prefilter stops the dust!
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12-18-2011, 01:22 PM
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Extreme ATV Enthusiast
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Member #19332
Join Date: Oct 2011
Location: Red Deer, AB
Posts: 344
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Quote:
Originally Posted by joshr08
Uni foam filter stops so much more dirt. With about 99% of all atv use being in the dust and dirt the K&N lets way to much junk through and that clugs up carbs and wears out reeds and valves.
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Interesting.
__________________
2011 Sportsman XP 850 EPS
Nicknamed "KATT" (Kickass All Terrain Toy)
Polaris Lock & Ride Front Storage Box
Polaris Lock & Ride Rear Storage Box
Polaris Deluxe Front Brush Guard
Polaris Deluxe Rear Brush Guard
Polaris Handle Bar Guards
Polaris Lock & Ride Back Rest
Polaris 3500lb Winch Kit
Polaris Winch Accessory Kit
Polaris Wireless Winch Remote
Polaris Trailerable ATV Cover
Polaris Hand Warmers
Polaris Thumb Warmer
GoPro HD Helmet Hero Camera
"I fire up the willing engine,
Responding with a roar.
Tires spitting gravel,
I commit my weekly crime..."
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12-19-2011, 07:37 AM
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Polaris ATV Junkie!
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Member #9763
Join Date: Dec 2010
Location: wichita falls, tx
Posts: 700
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Many will say uni filter. I personally run a K&N with no issues so far. There is many posts about uni vs k&N and most say uni, but I have never seen a test done on the two. I would love to see a comparison of the two with an actual test of which one lets through more dirt/dust.
__________________
2009 SPORTSMAN 800 H.O.
RUBBER DOWN CUSTOMS 2" LIFT
EPI HD SPRINGS
29.5 S/W OUTLAWS ON ITP SS312
1.5" SPACERS
GORILLA REAR PROP SHAFT
GORILLA AXLES
SUPER ATV BILLET CAGE IN FRONT DIFF.
SUPER ATV ARMATURE
WELDED LOW GEAR IN TRANSMISSION
QUAD SHOP CUSTOMS CLUTCHING
TRIANGLE ATV STEALTH SNORKLE
TRIANGLE ATV REAR RACK PLATE WITH AMMO CANS
RIDE N'REST BACKREST W/FROSTY BEVERAGE HOLDER
K&N FILTER
PURE POLARIS FRONT AND REAR BUMPERS
POLARIS FRONT AND REAR RACK EXTENDERS
POLARIS 3500 WINCH
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12-19-2011, 09:50 AM
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ATV Enthusiast
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Member #20124
Join Date: Nov 2011
Location: Nepa
Posts: 81
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I don't have a k&n on my 850xp yet, but do run one on my yfz450x. The intake on my yfzx is a air box delete leaving the air filter totally exposed. I do run a pre filter and oil it often. Every time I take off the filter to clean and oil it the inside of the intake tube is clean and dust free. I will put one on the 850 as soon as it's needed.
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12-19-2011, 12:16 PM
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Extreme ATV Enthusiast
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Member #2821
Join Date: Jan 2010
Location: North Pole, AK.
Posts: 424
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I run K&N on all 5 of my 4 wheelers and both my bikes and have for years. They all have the pre filters and the 4 wheelers see very dusty conditions and I have never had an issue. I have never seen any dust on the inside of the intakes to give me any indication that they are not filtering. The K&N get bashed pretty hard by a few folks on here and I cant say anything to there personal experience but as for me K&N work great.
__________________
04 Sportsman 700 efi black and silver, Big Gun Evo exhaust and tuner,3 light mod,reverse override,bar and thumb warmers,Moose pregressors,Polaris heavy duty front springs and gas shocks, Black Rock wheels,Polaris(warn) winch and plow, 2 inch receiver, Filtermag.
08 Sportsman 500 efi Browning camo, Big gun Evo exhaust and tuner,3 light mod,reverse override,bar and thumb warmers,Moose pregressors,Polaris(warn) winch, Cycle Country plow, 2 inch receiver, Black rock wheels,Filtermag
00 Magnum 325 not very HO green, rolled wrecked and rebuilt,heated grips and thumb warmer, Filtermag.
88 Yamaha Warrior 350 my first
88 Honda Foreman 350 takes care of the yard work
91 Suzuki DR 350 solves the urge to ride wheelies and catch big air
05 Kawasaki KLR 650 scratches the paved road itch
92&93 Indy 500 EFI SKSs takes care of the need to get away from home in the winter
04 Yerf Dog spiderbox buggy was supposed to be for the kids but I find I cant quit tinkering with it
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