Air filter material

[JJames]

Hey all. These are the air filters that were in my '81 special ll when I got it around 25,000 miles ago. I don't know if they had been patched up or were just sloppily constructed. Anyhow, they have been falling apart for quite a while now. The side plates were falling off despite globs of glue/sealant. The foam gaskets were also falling off.The bike runs great and the filters are out of site out of mind. I just could not let them slide any longer. I considered cleaning up and reusing the old filter material but it has a lot of loose. Crumbling bits on the inside. It looks like fiberglass plumbing insulation and used to be white.
I will re-atach the gaskets and side plates. I considered a few materials to re-cover the frames and think I've settled on the UNi foam sheets.
So my question is, which color to use. My understanding is that each color represents different filtration. I could probably Google it, and I did try the tech section, but cuold anyone recommend something that is similar in flow to the originals. Is there a more free flowing foam. Not opposed to playing with jets. Thanks for the help.

 

[JJames]

I see that these are fairly inexpensive on Mike's, Ebay etc. Any thoughts, reviews.

 

[jetmechmarty]

This is mine.

https://www.xs650.com/threads/reunited-with-xs650sh.63667/page-5#post-788071
Post #92

 

[hovel]

Fleabay has UNI filter foam in bulk It's the green stuff and it's not expensive. You'll get enough to share with your friends.
https://www.ebay.com/itm/226016490485

 

[willis]

I used the green sheet from mikes on mine.

 

[JJames]

Thanks guys. Just what I was looking for. Have to say I like the look of the red foam, even if it won't be seen.

 

[Its been a long time]

I used yellow foam, just because the original is yellow. But then I applied some K&N oil which is red. Ho hum.

 

[JJames]

UNI foam arrived yesterday. The frames were fixed and temporarily wrapped in oiled cotton gauze (cheescloth).Removed the gauze, cut and applied the foam with just a dab of silicone at the seam. Lightly oiled w/ 50/50 oil to gasoline. Went for a ride. Nice cool morning. Vroom Vroom!