Join Date: Jul 2004
Location: Dallas, TX, USA
Like Tim Said, alot of dust will get through because that is the more air flow secret of K&N filters (larger openings in the material). I would stick with the BMW filter as it will filter smaller particles. Most normal driving conditions it will last a long time. Matter of fact, this will probably be the last time you change it because you will be buying the new and improved 08' or 09' LT.
If you want to make God laugh, tell him your plans
Jerry P. Hatley
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2007 R1200RT (Betty Lou)
2009 Harley Roadglide (sold)
2007 Goldwing (sold)
1999 BMW K1200LT (sold)
2004 Harley Ultra Classic (sold)
2002 Harley Ultra Classic (sold)
1998 Harley Roadking Classic (sold)