Best Air filter`

Old sweat socks zip-tied to the throttle bodies!

Seriously, kinda depends on the bike. DNA's seem to make good power on most, BMC seems rated over K&N....this is kinda like an "which oil is best" question though.
 
We use K&N in all our stuff....and I have been to their facility and it is impressive....but it isn't a performance gain. The K&N is stuff is better at keeping crap out of your motor and its easier to keep clean.....and clean is better for performance.
 
Chip@KWS said:
A clean one...
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hahahha...god so true!! We need to start a collection of racer air filter pics...now that its the end of the season...wow..some of these things...really guys??

personally i like oem and bmc's..bmc's imo fit better than K&N's and like KN you can clean/reuse often easily.
 
Looks like the difference with the new k n filter is fewer "lines". 17 on the race filter compared to 20 on the standard. The bmc has 19. I wonder if you will se a gain on a dyno vs the 2 others.
 
Buchern said:
Looks like the difference with the new k n filter is fewer "lines". 17 on the race filter compared to 20 on the standard. The bmc has 19. I wonder if you will se a gain on a dyno vs the 2 others.
Click to expand...

I would be highly doubtful that you would. If I get a chance, I'll try it and post up results.
 
I've used Pipercross and BMC. In terms of quality and fit the BMC is head and shoulders above Pipercross.
 
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