I AM RUNNING A STOCK AIR FILTER ON MY 07 E-GLIDE. I KNOW K&amp\\;N MAKES A REPLACEMENT FOR THE STOCK CARTRIDGE, ( NOT THE ONE FOR THE STG.1 UPGRADE) WOULD IT WARRANT SPENDING THE X-TRA MONEY FOR ONE???? WOULD IT MAKE ANY IMPROVEMENT?? THANK YOU IN ADVANCE FOR ANY ANSWERS.

 

You'll never have to buy another one if you go K&amp\\;N ................ no performance difference.

 

It will flow better and is reusable. I would definitely get one.

 

That go the same for a 08 RKC?

 

Like everybody else said, you won't have to buy another filter and there is more air flow, just don't over oil the filter. You'll be cleaning oil off the right side of the bike!!

 

I've replaced stock filters with K&amp\\;N in all my stuff (bikes, cars, trucks) for years.&nbsp\\; No problems and they do flow better.

 

K&amp\\;N # 1499, I think, is the replacement for the stock one.&nbsp\\; It does flow better and will last forever if you service it properly.&nbsp\\; I like mine.

 

+1 for the K&amp\\;N OEM replacement, better flow and&nbsp\\;slight performance gain.&nbsp\\; After a couple of HD repalcement you will have&nbsp\\;paid for it.&nbsp\\;&nbsp\\;Many sellers on ebay of the one you need.&nbsp\\;&nbsp\\;&nbsp\\;

 

I use the Deep Breather and a K&amp\\;N

 

K&amp\\;N 1299 or RK 3909
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I got the 3909 cheap...why didn't i get one earlier?
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great improvement, will need a fuelpak or PCIII or one of your choice
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I gained (guess) 5-7 hp plus average is now solid 43-45 MPG&nbsp\\;
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