An internal velocity stack shaped structure serves to smooth and accelerate the air column. The result is an increase in flow and easier, more consistent jetting. The filter, produced by K&N exclusively for Küryakyn, is a round, slightly tapered air filter with the added benefit of filter material across the end of the filter. All other air cleaners block off the end of the filter so they are only able to breath through the sides. Our design will drastically improve flow without the need to overwhelmingly increase size.This is the first design in what promises to be an exciting series of air cleaners. The Hi Five cover is a five spoke, slotted design with both side and frontal openings to provide generous air-flow through the unique K&N filter.