catalog index superior air flow test results with cfm chart 90 Degree Basic Build Breathers Oil Tanks
Dual Runner Basic Build Full Drive/Pulley Covers Oil Coolers
ordering and fitment 60/90 & 90/90 Degree Basic Builds Engine/Brake Switch Covers Oil Cooler Accessories
Intake Component Guide Wimmer Stacks Other Covers

Motor Accessories

Top Builders Filters Rocker Box Mounted Gauges Turntables/Floor Boards
Special Gauges/Gauge Cups Triple Trees/Electrical Box
VSA Basic Build Air Cleaner Kits
60 Degree Basic Build Additional Intake Accessories Handlebar Related Spark Plug Socket & Wrench Kit

Superior Air Flow Test Results

Filter Tests
Filter Tests

All test results were done at 10”
To convert to 25” multiply (result shown) by 1.580

Required Air CFM based on cubic inch and desired RPM.
(RPM x C.I. per cylinder) / 1925 = 148.05 at 10”
Example: (6000 x 47.5 = 285000) / 1925 = 148.05 per cylinder

--------Stock Harley-Davidson® air filter flows 130 CFM at 10”

--------Harley-Davidson® Stage 1 Screaming Eagle™ flows 160 CFM at 10”

Test results provided by Horsepower Inc. (814) 835-4941

 Call Us Toll FREE IN THE USA AT 1.866.HOT.CYCLE or 215.721.4110

updated 06/17/2011 19:43


06/17/2011 19:43