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2001 Yamaha YZ426F

Twin Air Air Filter

Retail: $32.99
$29.99
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FITS: 2001 Yamaha YZ426F change
 
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Twin Air Air Filter - Main
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Product Description

The Twin Air Air Filter's design, high-quality materials and superior construction deliver unbeatable performance and protection - and make Twin Air Filters the hands-down choice of more World and National Champions than all other filters combined.

  • Twin Air filters are designed to increase airflow while ensuring the highest level of protection from dirt / dust.
  • Coarse open-pore foam catches airborne dirt, grime and sand.
  • Fine open-pore inner foam acts as a second filter to trap the smallest particles while ensuring maximum air passage.
  • Exclusively formulated adhesive ensures glue seams will not break down.
  • Thick, flat foam, greaseless sealing ring ensures maximum contact with your airbox, while acting as a breathable gasket for increased air passage.
  • Fused outer and inner elements prevent dirt and grime from being lodged between layers, unlike Twin Air, this can be a problem with inferior two-piece designs. Trapped particles can restrict airflow. And, if dirt works it's way into your engine, a pinhead-sized granule will gouge your cylinder, piston and rings like a bullet.
  • Customer Reviews
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(211)
4.7 out of 5 stars
5 star   169
4 star   34
3 star   4
2 star   2
1 star   2
Write a Review
“ Good product, I put this on my 08 CRF 250R after the factory filter was toast. ”
Ryan Location: Hillsboro, OR, USA
“ When I find a product that works I stick with it! I've used Twin-Air Filters for 10+ years and have g... ”
OldMan Location: Tuscaloosa, AL
“ Great filters! the glues stay together after dozens of cleanings. ”
bang Location: adams Tn
1-10 of 211
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Verified Purchaser
Location: Pittsburgh, PA, USA
Good air filter
I always use Twin Air air filters. They're durable, perform well, and always at a good price.
Overall
Durability
Ease of Installation
Style
Verified Purchaser
Location: Hillsboro, OR, USA
Twin Air Air Filter
Good product, I put this on my 08 CRF 250R after the factory filter was toast. Was easy to install, fit the factory filter brace very well. I really like this fitler because it has a very durable feeling to it, not a flimsy feeling,
Overall
Durability
Ease of Installation
Performance
Style
Top 50 Contributor Top 250 Contributor
Location: Crowley, LA, USA
Twin air filter
This is a great air filter, looks great, flows great and lasts a long time.
Overall
Durability
Ease of Installation
Performance
Top 50 Contributor Top 100 Contributor
Location: Tuscaloosa, AL
Only brand I use
When I find a product that works I stick with it! I've used Twin-Air Filters for 10+ years and have great success. They are durable, well made and I've never had dirt get past the filter. I used PJ1 cleaners and oils and the combination has served me well.
Overall
Durability
Ease of Installation
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Top 500 Contributor
Location: adams Tn
Twin Air Air Filter
Great filters! the glues stay together after dozens of cleanings. these are the only air filters I use.... 450s are spendy dont go cheap on your air filter!
Overall
Durability
Ease of Installation
Performance
Style
Verified Purchaser
Location: Vineland, NJ, USA
None better
Quality, Fitment, Durability. Twin air is the best filter going. I have tried others but they just don't measure up.
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Durability
Ease of Installation
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Style
Top 1000 Contributor
Great buy!
The air filter is your first line of defense when it comes to protecting the motor from foreign debris, so you want to make sure you have a quality air filter. The Twin Air dual stage filter is a quality product that I would recommend to anyone looking for an upgrade from stock.
Overall
Durability
Ease of Installation
Performance
Style
Top 500 Contributor Verified Purchaser
Location: northeast, TN
Can't go wrong with this
purchased for 03 kx125. fit perfect and you know you're protected
Overall
Durability
Ease of Installation
Performance
Style
Verified Purchaser
Location: Conroe, TX
Only filter I would trust
Only filter I would trust. Used Twin Air Filters for a long time and will continue using it. Great Filter!!!
Overall
Durability
Ease of Installation
Performance
Style
Verified Purchaser
Location: elkin nc
Pretty good buy
Very good produt,durable and not very expensive,the only thing is it doesn't come pre oiled so if that's what your looking for this isn't it but not hard to oil it up
1-10 of 211
Total Questions (16)
Questions with answers:
  16
Questions without answers:
0
Have a question?
“ Do you always have to oil up the air filter and if so what kind of oil or lube?... ”
yamil Location: Canterbury, CT, USA
“ Washing? after i have it all washed can i throw it on a shoe rack in my dryer to dry, or will i damag... ”
JohnCF
“ Can you put a twin air filter in a bike that does not have duel exaust?... ”
ytujyt
1-10 of 16
yamil 21 days ago Location: Canterbury, CT, USA
Do you always have to oil up the air filter and if so what kind of oil or lube?
MotoSport Staff
20 days ago Location: Portland, OR, USA
Yes, the foam filters do require you to oil the filter. Depending on riding conditions, the filter should be checked after each ride and cleaned accordingly. A dirty air filter will make your bike run poorly and if it gets too dirty, it can let contaminants into the engine which will severely reduce engine life. I prefer PJ1 foam filter oil and cleaner. Twin air also has their oil and cleaner which is good, and so does No-Toil.
Answer this Question
JohnCF Over 3 years ago
Washing? after i have it all washed can i throw it on a shoe rack in my dryer to dry, or will i damage the filter?
MotoSport Staff
Over 3 years ago Location: P+RTLAND
You should either let the filter air dry, or blow it dry with compressed air.
Top 250 Contributor Top 50 Contributor
1 month 26 days ago Location: Crowley, LA, USA
If you put it in a dryer you will damage the filter. This and most filters like this need to be air dried after they are washed. If you try to dry it with an air dryer or anything other than just leaving it in the sun it will damage the filter.
Answer this Question
Booty Over 3 years ago Location: The "Wood"
Will this fit 2005 yamaha wr450?
MotoSport Staff
Over 3 years ago Location: P+RTLAND
yes this will fit. Use the drop down menu to the right of the product. If you can profile your bike, then the product will fit.
Top 50 Contributor Top 250 Contributor
1 month 26 days ago Location: Crowley, LA, USA
Twin air makes filters for most bikes you just have to order the one for your specific bike.
Answer this Question
crfman450 Over 3 years ago Location: turin New York
I just bought a twin air filter for my 2008 crf450. I was just wondering if you are suppose to discard the oem filter cage?
Top 100 Contributor
Over 3 years ago Location: louisville, ky
No this uses the Oem cage.
Over 3 years ago
no, but cut the screen on the cage out, they are made of bacckfire resistant foam
Top 100 Contributor Top 50 Contributor
1 month 26 days ago Location: Tuscaloosa, AL
NO! Used your OEM cage with the new Twin Air Filter.
Top 50 Contributor Top 250 Contributor
1 month 26 days ago Location: Crowley, LA, USA
You don't have to throw the cage away. You can throw it away but it is actually a backfire screen and personally i take the screen out when I ride in the woods when I ride the tracks. I leave it in for the woods because it is dustier and the screen is like an extra filter, but take it out for the track because I like to get every ounce of horsepower.
Answer this Question
Garrett Over 3 years ago Location: Gilbert, Arizona
Is this the same as the factory pre oiled filter?
On this website is this the same filter but it is already pre oiled? http://dominus.rideshop.com/ViewProduct/FactoryPreOiledHondaCRF250R04-09CRF250X04-10CRF450RX03-08/4466.aspx
Top 25 Contributor
Over 3 years ago Location: chicago, il
Yes. Just more expensive for the pre-applied oil
Over 3 years ago Location: Covington,Va
I've purchased 4 twin airs for 4 different bikes and they've all matched up great, the filter its self is better than oem but you have to oil it yourself
Top 50 Contributor Top 250 Contributor
1 month 26 days ago Location: Crowley, LA, USA
It is oiled and cleaned in the same way as the stock filter, but it more of a performace product and does not come pre-oiled, so you have to have oil to put on it before you put it on the bike.
Answer this Question
JB450 Over 3 years ago
Cage?
does this fit a OEM cage?
Over 3 years ago
yes i got one for my kx 250 and it fits the stock cage
Over 3 years ago Location: New Jersey
yes
Top 50 Contributor Top 250 Contributor
1 month 26 days ago Location: Crowley, LA, USA
Yes it does.
Answer this Question
ytujyt Over 3 years ago
Can you put a twin air filter in a bike that does not have duel exaust?
Top 250 Contributor
Over 3 years ago Location: Burton, Texas
yes, i have three yz250f (not dual exhaust) that i run those in.
Over 3 years ago Location: Covington,Va
Yes most deffinately, if they say it fits it fits , the twin air boys don't play when it comes to oem specs and sizing
Top 250 Contributor Top 50 Contributor
1 month 26 days ago Location: Crowley, LA, USA
Yes you can. Twin Air is a name brand not a dual filter. They make filters for most off-road bikes.
Answer this Question
zgnite Over 3 years ago
Will the twin air filter give my 400ex more hp than a k&n filter?
MotoSport Staff
Over 3 years ago Location: P+RTLAND
Hard to say since I dont have any specs from the dyno for either of these products. Both will be about the same gain as far as HP goes.
Top 1000 Contributor
3 months 7 days ago Location: Columbia, SC, USA
Most aftermarket filters have very close to the same amount of air flow capacity. Therefor, Any difference in power will be minimal. More airflow can be achieved with the addition of an aftermarket intake boot and on some models, a cage-less intake system.
Top 50 Contributor Top 250 Contributor
1 month 26 days ago Location: Crowley, LA, USA
Pretty much the same, you will most likely not be able to tell the difference.
Answer this Question
paul1201 Over 3 years ago
Do i need a aftermarket filter bolt because on my o9 crf 250r the stock bolt seems too short?
MotoSport Staff Expert
Over 3 years ago Location: Portland, OR
You should not have to use any other filter bolt than the stock OEM. The thickness of this filter might be a little fatter than stock, so you might have to work at it to get the filter bolt started. Once you've taken the filter on and off a few times it will get easier.
Top 1000 Contributor
3 months 7 days ago Location: Columbia, SC, USA
The stock bolt should be sufficient. Make sure the filter cage sits on the mounting bracket correctly, otherwise the bolt will not fit, nor will you have a proper seal.
Top 50 Contributor Top 250 Contributor
1 month 26 days ago Location: Crowley, LA, USA
The stock bolt fits you just may not have it installed it correctly.
Answer this Question
bids Over 3 years ago
Does it need to be greased?
Does it need to be greased where it touches the air box?
MotoSport Staff
Over 3 years ago Location: P+RTLAND
You dont necessarily need to but it's recommended.
Over 3 years ago Location: Covington,Va
yes you will have to oil the filter when you recieve it, but its worth it
Top 250 Contributor Top 50 Contributor
1 month 26 days ago Location: Crowley, LA, USA
You can grease it but personally I just spray a little extra air filter oil right there and it seals fine.
Answer this Question
1-10 of 16

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