K&N R-0990 air filter

[blackstag]

Hey all,

I picked up a sweet tx650 last year and have it running quite well.

One of my complaints are the air filters that the PO installed, they are a bit like uni filters. They are full of a very sticky oil and are starting to fall apart.

In my search for filters I came across this;
http://www.ebay.com/itm/K-N-Universal-Air-Filter-New-Carefree-Custom-Cycles-Fat-Sonoran-Chopper-R-0990-/371002837697?pt=Motorcycles_Parts_Accessories&hash=item56617e0ac1&vxp=mtr

anyone ever used one or think it would work? The description does list a 79 xs650 as a possible canidate. or should I just stick with the standard like these?

http://www.ebay.com/itm/K-N-RC-0982-Custom-Clamp-On-Air-Filters-Oval-End-Cap-Chr-Fits-Yamaha-XS650-70-81-/310946309416?pt=Motorcycles_Parts_Accessories&fits=Model%3AXS650&hash=item4865d82528&vxp=mtr


I should take some measurements, just thought someone might know more than me.

Thanks!

 

[NONclow]

Welcome to the forum! I'm not sure about the first "universal" one, but these K&N pleated filters don't work as well with the stock BS38s. The vacuum slide needs a better "signal" (straighter flow, hence the term Constant Velocity), the Unis direct the air better whereas the K&Ns leave the vacuum slide port too close to open turbulent air dissrupting the signal usually with a flat spot in the top end of the rev range. I DID have a set of the oval tapered 2nd one(s) you linked, WITH the associated stumble. Now I have the Uni's (part# UP4229). I should have done it sooner.....Ahhhhh experience

 

[blackstag]

awesome news. those uni's look just like the ones that I am currently running. the only reason why I am looking to rid my current filters is because they are starting to deteriorate.

very helpful information sir, thats why I love spots like this on the web.

once again,
thanks