Your motorcycle's power depends on the ability for it to get clean, fresh air into its intake.

Increase Horsepower - for ®Harley Davidson air cleaner and experience more horsepower and torque.

The air cleaner is a critical part of your motorcycle's power and performance. By replacing the harley stock air filter element with the PowerPACC by Doherty Machine on their harley test bike, EasyRiders Magazine was able to increase the bike's power by 10.4 horsepower. It was also noted that the bike, a Harley Davidson™, acquired an extra 6.1 foot pounds of torque.

With the PowerPACC you can acheive more power for your harley by removing the stock motorcycle air cleaner, its cover, the filter and the breather lines. Insert a few nylon washers, bolts, and O-ring and the air cleaner and you are done in about a half an hour. It's simple and will make a world of difference for your bike's performance.

According to the authors of Performance Tech at American Rider, after installing the PowerPACC unit on a 2003 Deuce, the bike now responds with more quickness and crispness to the throttle. The official statement was that "it just feels more peppy".

The folks at V-Twin Magazine have stated that the Doherty air cleaner - the PowerPACC is unique because they introduce a velocity stack inside the filter element the filtered air is smoothed out before it enters the throttle bore.

Now you have a denser air stream in the intake track and the breather design keeps the dirty engine crankcase air away from the the intake air. Screaming Eagle