K&N air filter worth it??

JH PiNoY · July 10th, 2013, 09:13 PM

I've heard of several people installing a K&N air filter to replace the stock ones. My questions is, is it beneficial to change the stock foam air filter? Will any tuning be needed although there is supposedly more airflow with the K&N?

cuong-nutz · July 10th, 2013, 09:16 PM

there in a slight increase in airflow. I honestly don't think you will need to change jetting. If anything just add a couple shims under each needle and you should be ok.

JH PiNoY · July 10th, 2013, 09:19 PM

is there any possible risk in shimming the needles?

cuong-nutz · July 10th, 2013, 09:26 PM

Quote:

Originally Posted by JH PiNoY

is there any possible risk in shimming the needles?

If you're not careful with removing the carb screws, you may strip the head and may have a difficult time to removing them.

http://www.ninjette.org/forums/showthread.php?t=11963

Check the FAQ/DIY section:

http://www.ninjette.org/forums/showthread.php?t=5586

caps · July 11th, 2013, 04:35 AM

I have K&Ns in 3 of my bikes and one of my cars, they make good stuff.

Yakaru · July 11th, 2013, 05:15 AM

Quote:

Originally Posted by cuong-nutz

If you're not careful with removing the carb screws, you may strip the head and may have a difficult time to removing them.

http://www.ninjette.org/forums/showthread.php?t=11963

Check the FAQ/DIY section:

http://www.ninjette.org/forums/showthread.php?t=5586

This x2, I stripped more than half of mine (in large part because my JIS screwdriver in the toolbag deformed a bit; I got a 'real' JIS driver after that).
If you mess with the carbs then I highly recommend replacing those screws with hex heads, I got a set of those with my AreaP jetting kit and they were a godsend.

DaBlue1 · July 11th, 2013, 09:33 AM

Quote:

Originally Posted by JH PiNoY

I've heard of several people installing a K&N air filter to replace the stock ones. My questions is, is it beneficial to change the stock foam air filter? Will any tuning be needed although there is supposedly more airflow with the K&N?

Also keep in mind that there are several stock replacement filters available.

Alex · July 13th, 2013, 06:47 PM

/moved to pre-gen tech

sunspots · July 13th, 2013, 11:04 PM

I replaced my old air filter with a K&N. The thing was absolutely disgusting.

Before:

The K&N one is much much nicer, overall its incredibly made, very sturdy and quality product. Haven't noticed any gains from it, but then again I just started riding so I'm the wrong one to make a judgement call on performance.

BlueRaven · July 14th, 2013, 07:58 AM

You happen to remember the part # for the KN air filter? I rather check the stores before i show up and come up empty handed, its about a 45 min drive to the city. Found some oil on my stock one last week too and you just reminded me i forgot to replace it.

sunspots · July 14th, 2013, 09:23 AM

The part number is KA-2508

I got it from amazon for $36 shipped, most stores I've seen carry it for around $44 + tax, the time and gas it takes for you to get there..

http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1

BlueRaven · July 14th, 2013, 09:39 AM

Thanks!

BlueRaven · July 14th, 2013, 10:27 AM

Well this sucks. I've called a few parts places that are open on Sundays and no ones carries it. Haven't found a parts store online in Canada, i'll have to figure out who i dealt with in the past. Not available on Amazon.ca

this is the downside of living up north i guess. I'll keep looking online if i can find it at a canadian parts store online...ughh

DaBlue1 · July 14th, 2013, 10:48 AM

Quote:

Originally Posted by BlueRaven

.... . I'll keep looking online if i can find it at a canadian parts store online...ughh

Try SportbikeTrackgear.com
They're just across the border in Michigan.

BlueRaven · July 14th, 2013, 10:54 AM

I'm on the east coast of Canada more like three hours from the border of Maine. Besides checked the site and they don't carry one for our bike.

If i order something from the states i have to pay Duty which is ridiculous not to mention pay extra for international shipping. Appreciate the help regardless.

DaBlue1 · July 14th, 2013, 11:14 AM

Quote:

Originally Posted by BlueRaven

I'm on the east coast of Canada more like three hours from the border of Maine. Besides checked the site and they don't carry one for our bike.

If i order something from the states i have to pay Duty which is ridiculous not to mention pay extra for international shipping. Appreciate the help regardless.

Gotcha. Maybe this helps, it's in Canada.
http://www.canadasmotorcycle.ca/k-n-...ir-filter.html
(Note the K&N p/n is correct KA-2508, disregard the 'F' designation on EX250 Model)

July 10th, 2013, 09:13 PM	#1
JH PiNoY ninjette.org member Name: Josh Location: St. Augustine Join Date: Jun 2013 Motorcycle(s): '09 250R Posts: 13	K&N air filter worth it?? I've heard of several people installing a K&N air filter to replace the stock ones. My questions is, is it beneficial to change the stock foam air filter? Will any tuning be needed although there is supposedly more airflow with the K&N?

July 10th, 2013, 09:16 PM	#2
cuong-nutz RIP Alex Name: Cuong Location: Houston, TX Join Date: Apr 2011 Motorcycle(s): '10 250r, '09 265r Posts: A lot. Blog Entries: 2	there in a slight increase in airflow. I honestly don't think you will need to change jetting. If anything just add a couple shims under each needle and you should be ok. __________________________________________________ HalfFast Racing Team Serving Greater Houston Area Riders:WFO Riders MotoHouston HPC CMRA Ride Smart Fastline Lone Star Track Days

July 11th, 2013, 04:35 AM	#5
caps Sexy Beast Name: Mat Location: Tampa Join Date: Mar 2011 Motorcycle(s): 2010 Ninja 250R, 2006 ZX-14, 2012 Ducati Monster Posts: A lot.	I have K&Ns in 3 of my bikes and one of my cars, they make good stuff. __________________________________________________ 2010 Ninja 250 2006 Ninja ZX-14 ^Both Links

July 13th, 2013, 06:47 PM	#8
Alex ninjette.org dude Name: 1 guess :-) Location: SF Bay Area Join Date: Jun 2008 Motorcycle(s): '13 Ninja 300 (white, the fastest color!), '13 R1200RT, '14 CRF250L, '12 TT-R125LE Posts: Too much. Blog Entries: 7	/moved to pre-gen tech __________________________________________________ Montgomery Street Motorcycle Club / cal24.com / crf250l.org / ninjette.org ninjette.org Terms of Service Shopping for motorcycle parts or equipment? Come here first. The friendliest Ninja 250R/300/400 forum on the internet! (especially Unregistered)

July 14th, 2013, 07:58 AM	#10
BlueRaven ninjette.org certified postwhore Name: Lil One Location: NB Canada Join Date: Mar 2009 Motorcycle(s): '09 Ninja 250 Black Posts: A lot.	You happen to remember the part # for the KN air filter? I rather check the stores before i show up and come up empty handed, its about a 45 min drive to the city. Found some oil on my stock one last week too and you just reminded me i forgot to replace it. __________________________________________________ I'm not small, I'm fun sized

July 10th, 2013, 09:19 PM	#3
JH PiNoY ninjette.org member Name: Josh Location: St. Augustine Join Date: Jun 2013 Motorcycle(s): '09 250R Posts: 13	is there any possible risk in shimming the needles?

July 13th, 2013, 11:04 PM	#9
sunspots ninjette.org member Name: Sunspots Location: Austin, TX Join Date: Jun 2013 Motorcycle(s): 08 Plasma Blue 250 Posts: 56	I replaced my old air filter with a K&N. The thing was absolutely disgusting. Before: The K&N one is much much nicer, overall its incredibly made, very sturdy and quality product. Haven't noticed any gains from it, but then again I just started riding so I'm the wrong one to make a judgement call on performance.

July 14th, 2013, 09:23 AM	#11
sunspots ninjette.org member Name: Sunspots Location: Austin, TX Join Date: Jun 2013 Motorcycle(s): 08 Plasma Blue 250 Posts: 56	The part number is KA-2508 I got it from amazon for $36 shipped, most stores I've seen carry it for around $44 + tax, the time and gas it takes for you to get there.. http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1

July 14th, 2013, 09:39 AM	#12
BlueRaven ninjette.org certified postwhore Name: Lil One Location: NB Canada Join Date: Mar 2009 Motorcycle(s): '09 Ninja 250 Black Posts: A lot.	Thanks! __________________________________________________ I'm not small, I'm fun sized

July 14th, 2013, 10:27 AM	#13
BlueRaven ninjette.org certified postwhore Name: Lil One Location: NB Canada Join Date: Mar 2009 Motorcycle(s): '09 Ninja 250 Black Posts: A lot.	Well this sucks. I've called a few parts places that are open on Sundays and no ones carries it. Haven't found a parts store online in Canada, i'll have to figure out who i dealt with in the past. Not available on Amazon.ca this is the downside of living up north i guess. I'll keep looking online if i can find it at a canadian parts store online...ughh __________________________________________________ I'm not small, I'm fun sized

July 14th, 2013, 10:54 AM	#15
BlueRaven ninjette.org certified postwhore Name: Lil One Location: NB Canada Join Date: Mar 2009 Motorcycle(s): '09 Ninja 250 Black Posts: A lot.	I'm on the east coast of Canada more like three hours from the border of Maine. Besides checked the site and they don't carry one for our bike. If i order something from the states i have to pay Duty which is ridiculous not to mention pay extra for international shipping. Appreciate the help regardless. __________________________________________________ I'm not small, I'm fun sized

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