OK folks, here is the skinny on the short filter. I coughed up the money 90 bucks and ordered the short filter from the stealer for the heavy breather so I could install the lower right glove box back on the bike. My set up now includes the Rush slip-ons with 1.5" baffles, Heavy Breather with short air filter and a Screaming Eagle tuner. After running two full tanks of fuel through the bike I have picked up a hair over 40 miles per gallon, a gain of 4 miles per gallon. And the bike actually feels like it has a little more torque. What do you all think should I take it in and have it re-Dynoed or let it be? With that being said, here are the measurments for the short filter in case someone wishes to match it to another type of K&N or other after market filter. The K&N part # on the filter is F027Q6, a part number that does not match anything in the K&N line up for the states even though it says right on the filter "Made in the U.S.A.". One of those things that make you go HHHmmmmm. FA - Flange Angle 0 F - Flange Inside Diameter 2 3/4" FL - Flange Length 9/16 L - Height 4 1/2" D - Top Outside Diameter 3 3/8"