Bonneville America Forums Forums Technical Forums Performance Mods K&N air filter e-mail drive!!!

For the UK: uk.sales@knfilters.com

For Europe (Except the UK) - Middle East - Africa: eindhoven.sales@knfilters.com

"UNI" washable filters are kind of the standard for motorcycles. They have a model that fits our bikes, not sure it's worth the effort for the K&N drop-in. NEITHER will give you any performance improvements, but should last the lifetime of the bike and IF oiled properly will filter better than the OEM paper element.

New Bonneville.Com UNI filter

"NEITHER will give you any performance improvements..."

It would be interesting to do some air flow tests at higher rpms (or greater pressure drops) with both these filters compared to stock ones. The aftermarket ones just might breath a little better, I'm guessing (especially if they have a larger filtering area).

They probably flow a little better but how much that translates into actual performance (mph or mpg) of some kind I'm skeptical of as well. It seems to me the best advantage to these filters is they are cleanable and reusable for not a great deal more $$ than the disposable stock filter. For me this means I'm more likely to take the thing out and clean it every 5k instead of waiting until 12k to just replace it.

Keith

What a great idea writing to K & N. I did just that this morning. I put a great letter together telling them that all my personal vehicles (cars, trucks and motorcycles) have K & N air filters. My 1973 Triumph Bonneville chopper has two K & N air filters. I added that there are many Triumph owners that would benefit from this product. So lets see what happens.

jazz,
I rememeber reading a very interesting experiment on the oiled filters vs the dry papers. The final result, of a scientifically controlled experiment showed that the best performance was gained using the stock paper filters in almost every application they tried it in. The guys that did it ran a huge construction company and spend thousands of dollars a week on replacing air filters. The oiled filters, they used K&N nad Uni filters, all failed miserably as they all allowed much larger particles to come through the filters, requiring more frequent replacement and much more friction damage to the motors. They used them in large earth moving equipment, and their fleet of work trucks, big and small. In every case the paper was shown to work better at filtering, the sole purpose of any air filter.
I can't for the life of me find the link but if you do some searching it will show up, it was called something along the lines of "K&N exposed" It was well writen and made sence to me.
With that said, I still have the K&N air filters on Speedy.

Here's a website link for some facts from K&N about their filters:

K&N - Facts You Should Know About Air Filters

I just got a reply from K & N about getting air filters for the 2003 TBA. They say it is difficult to get OE information for the Triumphs. They're asking for the part number for the air filter for the 2003 TBA, would anyone know the number off hand for me to give to her? I can't find it when I look on the Triumph website. Thank you.

Would the part no. be in the owner's manual? I'd have to go home and check to see, but that might be a good place to start. Or if anyone has the tech. manual it could be in there. I e-mailed EurosportCycle for the part no., but no reply yet.

I'm sure the part number is in the owners manuel, but I'm stuck here at work and my manual is home also.

At least I got a reply from K & N and they're interested in looking into this for us.

The microfiche says T2202450. Hope this helps!

Eurosport gave me the same number that Piper came up with: T2202450

Hi Triumph64,
The UNI filter #NU-3008 is what we need. That part number reference (from a competitor) will get their attention. K&N replacements will be available in a week.
Thanks,
Dennis

Dinqua
I remember reading that same article a few years back, picked it up off another bike site during one of those drawn out "my oil filter, air filter, tires are better than yours" threads.

There has been alot of independent testing of various filters out there (don't just rely on the manufacturer!!!).
Do a net search for 'air filter tests'. Most of the testing has been done by car guys with too much time on their hands, but from my reading the K&Ns were not all that impressive.

But I sent an email anyway - variety and choice is good for all of us.

A mate of mine does drag raceing and has been involved in alot of performance testing, he recomended that i stick with the stock paper filter just open the air box up as much as possible without interfearing in the filtration, I trust his judgment but have considerd the K&N filters, I'm still running stock at the mo.

Triumph64,

Did you get any other responses back from K&N?

Request a K&N Product for Your Vehicle Here!!!!!!

sent it in. but would the filter really amke a noticible difference?

Frank

(FYI, I sent the following today. Good idea Alkimmel)
--------------------------------------------------------

To whom it may concern

Please take the time to look at the following web site

www.bonnevilleamerica.com

This is a web site set up for owners of the above mentioned motorcycles. If you have a good look you'll notice how members are from countries such as Sweden, England, America, and Australia (me!), to mention a few. We all want the same thing.......

Stock replacement K&N air filters to fit these bikes. This is a market you really should tap into!




Regards


Michael Matheson.

Here's my reply from K&N:

Quote:

---

Dear Customer,



At this time we have not released a Replacement Filter for your vehicle. If you'd like to be notified if/when it is released for your vehicle, please visit our "product request" page at http://www.knfilters.com/products_needed/default.aspx and take a minute and fill out the form. You will be notified via E-mail when a product is released. (The system will automatically send you an e-mail with all current products available or confirmation that we do not have what you are looking for, and future e-mails will be sent if new products become available in the future).







Thank you,

Leon S. Collins

K&N Technical Support



The statement above is intended solely for the person(s) to whom it is addressed and is not to be publicized, republished, copied or repeated unless done so in its entirety. If you are not a named recipient, you are also on notice of its status. Please notify the sender immediately by reply e-mail and then delete this message from your system. You must not disclose it to any other person, copy or distribute it or use it for any purpose.

---

I think the KN191 works, doesn't it?

OOPS! The KN-191 is the OIL filter - never mind.

I received a response from Leon Collins. He says to use the TB9004 filter. I went to their site and that filter fits the Thruxton, Bonneville and T100. Not sure if it will work with our bikes.

Nope, the filters for the bonnies are different sizes.

Keep up the good work guys! Let K&N know that we're interested!

Also, make sure to mention that the TB9004 will not work with our bikes!

Hi all - see post re DNA air filter - this is a "drop in" can be obtained from Norman Hyde in UK for about $65 US. It looks the same as a K&N.

Regards

Jan