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Discussion Starter #1
K&N currently does not carry an air filter for the CBR250. I have found on my other bikes and cars that using one does provide better top end engine responsiveness. Not a night and day improvement, but maybe 5 mph higher max speed. Seems like that would be of interest to many for the CBR250. If you want to help, get on www.knfilters.com/products_needed/ where you can recommend to them to make one. Maybe they will offer one by the time I need to change mine.
 

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Many believe that gains with the CBR250 are not really to be found with the breathing system, as much as other bikes/cars.

If you want a basic performance mod, go for the fuel.
 

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I sent the request.
A k&N flows more air thus making the ecm richen the fuel mixture. It most likely will not make any power difference but it might make the throttle a little crisper and broaden the power band a microscopic bit at the cost of teeny tiny bit of mpg.

Needless to say, I want one too :)
 

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Discussion Starter #7
Response from K&N

Response from K&N. I hope more members contact them to produce the filter. But then, the bike was just introduced in 2011 in the US ...
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Hello Ivo,

Thank you for contacting K&N and inquiring about our products. We do not have that information on what filters are in development or what is possibly going to be made. All I can say is keep checking back to see if we have released anything, but at this time we do not offer an air filter for your vehicle. Please let me know if you have any other questions?

Thanks for writing,

Robert Knudsen
Product Specialist
K&N Engineering Inc.
www.knfilters.com
(800) 858-3333
 

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The product specialist doesn't:

'have that information on what filters are in development or what is possibly going to be made.'

Hmmm.
 

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K&Ns don't always flow more air than stock. Case in point, my friend's 2009 ZX-6R lost power. With a full Two Brothers system, their Juice Box with their map and the stock air filter he was up 1 bhp (with significant midrange gains). Dropped in a K&N (same dyno, same day) and lost his midrange gains and 2 bhp at peak, which put him below stock output. In other words, the filter flowed less air than stock and voided the pipe and fuel module. Other tuners I know have seen the same thing.

In my mind, the greatest advantage of a K&N is that it has superior filtering capabilities due to the dust-attracting properties of the oiled gauze, and they are washable and infinitely reusable. For those reasons they are a great street filter, but on a race bike or other machine where peak performance is desire, I'd go with a Pipercross or some other filter (like DNA) that can show me that for THAT particular filter their version flows more air.
 

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K&N filter for CBR250R ->KN-112 - K&N Oil Filters, Oil Filter

Not sure about the price. I will order one this week,
Vsss y Gassss
MuletCrCr

Response from K&N. I hope more members contact them to produce the filter. But then, the bike was just introduced in 2011 in the US ...
__________________________________________
Hello Ivo,

Thank you for contacting K&N and inquiring about our products. We do not have that information on what filters are in development or what is possibly going to be made. All I can say is keep checking back to see if we have released anything, but at this time we do not offer an air filter for your vehicle. Please let me know if you have any other questions?

Thanks for writing,

Robert Knudsen
Product Specialist
K&N Engineering Inc.
www.knfilters.com
(800) 858-3333
 

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K&N's do flow well but from my experiance with them on cars and mx bikes, they do not filter worth a crap. Every time I have pulled one out I always find a ton of dirt in throttle body's on cars and intake boots on bikes. I myself am not a fan of them. Just my opinion.
 

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K&N's do flow well but from my experiance with them on cars and mx bikes, they do not filter worth a crap. Every time I have pulled one out I always find a ton of dirt in throttle body's on cars and intake boots on bikes. I myself am not a fan of them. Just my opinion.
I agree with you. No performance increase, and more crap in your engine. Better sticking with the stock filter IMHO.
 

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I agree with you. No performance increase, and more crap in your engine. Better sticking with the stock filter IMHO.
For sure, someone will make a high flow dry filter. And these filters that I have seen not filtering anything are properly oiled. If you hold them up to light its like looking through a screen.
 

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Seems like people either love them or hate them. I have no experence with them but think ill just stay with stock system
 

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Discussion Starter #15
K&N filter now available. HA-2511, about $35 on Amazon.com. Installed, as with previous experience, mild improvement in responsiveness and top speed.
 

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I had emailed AEM about making a DryFlo for our bike (or if one was in development), however I never got an email back. Shame, as I really like the V2 (with DryFlo) on my car.
 

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I had emailed AEM about making a DryFlo for our bike (or if one was in development), however I never got an email back. Shame, as I really like the V2 (with DryFlo) on my car.
I emailed them over a month ago and got a reply back within a week. They said something along the lines of they cannot discuss future developments but will be looking into the market possibility for the CBR.


Sent from my iPhone using MO Free
 
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