57-1138C K&N Performance Air Intake System
|Estimated Horsepower Gain||5.97 HP @ 4812 RPM|
|Air Filter Color||Red|
|Air Filter Material||Cotton Gauze|
|Air Filter Outlet Shape||Round|
|Clamp Material||Stainless Steel|
|Clamp Style||Worm Gear|
|CARB EO Number||D-269-60|
|Product Style||57 Series FIPK|
|Intake Pipe Color / Finish||Chrome|
|Intake Pipe Material||Aluminum|
|Street Legal In All US States||Yes|
|TUV Approved (Europe)||No|
|Weight||3 lb (1.4 kg)|
|Product Box Height||4.88 in (124 mm)|
|Product Box Length||11.75 in (298 mm)|
|Product Box Width||9.5 in (241 mm)|
|Mounting Hardware Included||Yes|
|Warranty||1,000,000 Miles/10 Year|
Easy Moderate Advanced
Wrench, Extension, Flat Blade Screwdriver, Allen Wrench
Installation PDFInstallation Instruction Sheet Dyno Chart - 2017 HD Road Glide 107 CC - 5.97HP Increase
50 years of improving vehicle performance.
Cold Air Intakes
Custom-engineered tubes deliver better airflow than you get with a stock intake. More air means better performance.
Using cotton gauze instead of typical folded paper, our filters increase airflow while providing excellent engine protection.
Cabin Air Filters
Helps capture most mold, mildew, fungus, spores, bacteria, germs, pollen and allergens, and helps to rid the air of unpleasant odors.
K&N oil filters use a high flow filter media that allows for high flow rates while providing outstanding engine protection.
From custom air filters to fuel pumps and carb accessories, the K&N Speed Shop has been assembled to help your vehicle run at peak performance.
Home Air Filters
New washable and reusable air conditioning and furnace filters for your home. From the industry leader in washable automotive filtration.
K&N is the home of the original red oiled air filter. In the early 1960s, two motorcycle racers, Ken Johnson and Norm McDonald (K&N), developed a ground-breaking new idea for an oiled air filter. Five decades later, K&N® is still innovating industry-leading filtration technology, and offers outstanding protection for everything from top-fuel dragsters to commuter vehicles across the globe. Thank you for helping us reach 50 years in business!