Vintage Dirt Bike Q & A

I ran a few searches, found some negative comments on the sketchy mounting of the Uni filters for a 78 CR250. Also read that the stocker is still available and fits fine. So, I called around today and it's 2-3 weeks minimum to get one.

Has anyone ordered a stock filter lately and gotten it any quicker?

Is the Uni really that bad? I have had very good luck with them on other bikes, and I am fairly certain it will filter better than the stocker.

What exactly is the problem with the mounting? I would really rather spend a few more minutes adapting a better filter, than just have a perfect stock fit/look. My bike is for riding not show, FWIW.

I ordered a stock filter unit a couple of weeks ago. My dealer had it for pickup in four days. I have a Uni filter also. The next time I get a Uni will be when there are no more stock ones available. I am not too thrilled with how the Uni fits and how it's held on by a zip tie. I don't see how anything could work better than the stock filter. I haven't had any problems, or leaks while using stockers over the last 28 years.

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1978 CR250R
1979 CR250R
1980 CR250R
1980 ME360
1986 CR250R

Maybe a bit off subject but you can make one to perform and fit just like the stocker with a piece of foam sheet from the local craft store and some contact cement. Cost almost zero. I'm cheap Good luck....Van

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1980 Honda CR125R

I have a stash of NOS air filters specifically to avoid using either the Uni or Twin Air filters. Both are great filters generically - I use them on other bikes - but in this specific case the fit is inferior to stock.

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Michael Stiles
1979 Honda CR250R Elsinore | 2006 Husqvarna SM510R | 2007 Service Honda CR500R-AF

I ordered one for a '76 from a Honda dealer a while back. I had it in 4 days also. Now I don't know what the original OEM filters were like, but I have to say the new one I just got was unbelievably good quality and fit. Better than the aftermarket I had been using.

I have considered this! It can't be that hard. Do you have any pics of yours? You just used the regular white foam rubber stuff? Contact cement - is that the same as rubber cement?

I'm cheap too, but I like to think of it as "value-conscious", or "resourceful".

I will probably go ahead and order a couple stockers, and try making one until they get here. If it will ever quit raining around here, maybe I'll get to ride.

tracetrimble, I like to call it "frugal"

The color dosn't matter. I got a sheet of 1/2" foam that's yellow. Don't remember where I got it. Contact cement in a tube will work but I use the 3-M contact cement in an aresol can. Once you get the pattern down to duplicate your stock filter you can cut one out and glue it together in about 5 minutes. I spray a mist of WD-40 on it then slip it over the stock frame and attach with an appropriate rubber band. When I get a chance I'll do a "How to make a filter" with step by step pics. I hear ya about the rain ...Van

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1980 Honda CR125R

Here's the filter and the adhesive I use to make it. It's really easy to do ...Van

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1980 Honda CR125R

Nice work. Have you oiled it and/or done a clean/reoil on it yet?

I wonder why the Uni design is a PITA if it's so easy to make a copy of the stocker?

- Trace

Probably not worth the cost for manufacturers.

Yes, you can clean and re-oil the homemade one but they are so easy and cheap to make it's hardly worth the effort ...Van

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1980 Honda CR125R

pvc cement also makes excellent glue on the foam. Used to have to do this on an old Yamaha I had.