How good are these?
How do they compare to stock and K&N?
Do i need to rejet my 300 for just the filter?
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TC/Axis 426 #54
Twin air filters
How good are these?
How do they compare to stock and K&N?
Do i need to rejet my 300 for just the filter?
ATVA District 7 #54
03' Axis/Houser MX 426ex
---------------------------------
- Houser long travel arms
- LT Custom Axis Fully adj fronts
- LT Custom Axis dual-rate rear shock
- TC racing motor with all the goodies
- Sparks 8-plate clutch
- Barnett basket
- Duncan Racing graphics
- LSR brake lines
- Tinner air scoops
- race plastic
- 450r pegs
- Holeshot MX fronts on ITP rims
- Atv Inc. +4 axle
- RAD axle lock nut
- Graydon Proline nerfs
- 15/36 gearing
- Primary Drive X-ring chain
- Renthal bars
- Curtis Sparks X-6 exhaust
- Razors MX rears on Douglas rims
- PRM chassis skid
- Dyno jets (40P 155M)
- Pro Design kill switch
- White Bros. powerfilter
- NAC's p-brake block off
- MSR clutch perch and lever
and more.....
Senior Member
Twin and UNI are quality filters and about the same deal really. If your stock has had more than 12 solvent cleanings it's time for a new one. The K&N thing has a lot of hype with airflow vs. fine particle blocking properties. The cost vs. performance difference is marginal. If you ride desert sand the K&N by itself is fine (sand = large particle). If you ride dry dusty trails add an outerware sleeve, now you have spent $55 for a filter.
If you are trying to benifit from the increased airflow of K&N you must punch holes in your airbox lid or remove the lid totally and re-jet the carb to a larger main jet. This mod can be done with foam or the K&N. If you keep the lid stock, the benifit of any new filter for increased performance is not going to happen - no change. The UNI or Twin is cheaper than a replacement Honda filter. For the additional expense of a K&N, I don't think the airflow deal is really "feelable" and personally trust oiled foam more.
White_Knuckles
Anything made can be made Better!
Registered User
i have a twin air and it seems pretty durable. there was no performance from it though. i now run without a lid and jetted the bike and that helped for performance. if i had to do it again, i would get a uni.
2005 450r
*sold* 2001 400ex
"If you think you can, you can. If you think you can't, your right."
"A leader will take you where you want to go. A great leader will not necessarily take you where you want to go but where you ought to be."
"If you want to do something, you will find a way; if you don't, you'll find and excuse!"
"Its not aptitude but attitude that determines your altitude."
TC/Axis 426 #54
OK then, I guess i'll get a UNI filter.
If i put just a UNI filter on and leave the airbox lid on, do i need to rejet?
ATVA District 7 #54
03' Axis/Houser MX 426ex
---------------------------------
- Houser long travel arms
- LT Custom Axis Fully adj fronts
- LT Custom Axis dual-rate rear shock
- TC racing motor with all the goodies
- Sparks 8-plate clutch
- Barnett basket
- Duncan Racing graphics
- LSR brake lines
- Tinner air scoops
- race plastic
- 450r pegs
- Holeshot MX fronts on ITP rims
- Atv Inc. +4 axle
- RAD axle lock nut
- Graydon Proline nerfs
- 15/36 gearing
- Primary Drive X-ring chain
- Renthal bars
- Curtis Sparks X-6 exhaust
- Razors MX rears on Douglas rims
- PRM chassis skid
- Dyno jets (40P 155M)
- Pro Design kill switch
- White Bros. powerfilter
- NAC's p-brake block off
- MSR clutch perch and lever
and more.....
Senior Member
No need to rejet, but you're missing the best low buck mod known to 4-strokes. I installed a UNI filter, added (4) 1" UNI pop-in filters (inserted into airbox lid), a Pro Circuit T-4 slip-on pipe and 3 dealer main jets (for ranging) all for $250 total.Originally posted by sprtrx300ex
OK then, I guess i'll get a UNI filter.
If i put just a UNI filter on and leave the airbox lid on, do i need to rejet?
That bugger jumped up and hauled, remarkable difference. You can do it in steps but the jets may need to be adjusted per step increments.
White_Knuckles
Anything made can be made Better!
Registered User
i know the uni vents come in a 6 pack. they don't let too much dust in the air box either. for $10 i thought it was worth a shot. with just an airfilter, you won't need to rejet.
2005 450r
*sold* 2001 400ex
"If you think you can, you can. If you think you can't, your right."
"A leader will take you where you want to go. A great leader will not necessarily take you where you want to go but where you ought to be."
"If you want to do something, you will find a way; if you don't, you'll find and excuse!"
"Its not aptitude but attitude that determines your altitude."
I do my own nude scenes
I have both a uni and twin air, I like the uni better because the twin air uses the stock filter cage and in is very tight going on and off, the uni is one piece and does not use the stock cage.
***Suzuki it's what's for dinner!!***
02 426 EX, Web 450/451 cam, ported and polished head, Uni air filter,HMF full system, outerwears shock covers,outerwears airbox lid, GCD(tinner) scoops, Gunner kill switch, PEP Steering stablizer, Tag X5 handelbars, AC nerf bars, AC front bumper, Kenda klaw XC on .190 Douglas wheels, ELKA front shocks, braided brake lines, empty wallet
**shut up voices or I will poke you with another Q-tip**
My boy rides a Lt50
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