Home | Search for Products | Where to Buy | Facts | Testimonials | FAQ's | Product & Racing News | Contact K&N

K&N Custom Air Cleaner Assemblies for the Harley Davidson FLSTFB Softail Fat Boy Lo Motorcycle

K&N Custom Assemblies for Harley-Davidson FLSTFB Softail Fat Boy Lo 

Buy now from the K&N Store and get a 100% money back guarantee & free shipping on any air intake!

  • Improves Performance 
  • K&N Million Mile Limited Warranty®
  • Replaces entire factory air intake system
  • Easy to install performance
  • More than 500 air intakes available 

Add more power to your Harley Davidson FLSTFB Softail Fat Boy Lo with a K&N air intake. 

 Click Here to Find K&N Cold Air Intakes, Air Filters, & Oil Filters for any Vehicle!
K&N Custom Assembly for Harley Davidson Motorcycles
Vehicle Description Type Product Part Number Product Image
2012 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 103 CI - All Motorcycle Aircharger 63-1125

7.78 HP @ 4953 RPM
 		Get Pricing and Buy
63-1125 Air Intake
2012 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 103 CI - All Motorcycle Aircharger 63-1125P

7.78 HP @ 4953 RPM
 		Get Pricing and Buy
63-1125P Air Intake
2012 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 103 CI - 1-5/8 inch tall filter Motorcycle Custom Assembly RK-3909-1

6.05 HP @ 5206 RPM
 		Get Pricing and Buy
RK-3909-1 Air Intake
2012 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 103 CI - 2-1/4 in tall filter Motorcycle Custom Assembly RK-3910-1

10.76 HP @ 5206 RPM
 		Get Pricing and Buy
RK-3910-1 Air Intake
2012 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 103 CI - All Motorcycle Custom Assembly RK-3932

7.16 HP @ 5206 RPM
 		Get Pricing and Buy
RK-3932 Air Intake
2012 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 103 CI - All Motorcycle Custom Assembly RK-3933

7 HP @ 5204 RPM
 		Get Pricing and Buy
RK-3933 Air Intake
2012 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 103 CI - All Motorcycle Custom Assembly RK-3934

10.23 HP @ 5155 RPM
 		Get Pricing and Buy
RK-3934 Air Intake
2012 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 103 CI - All Motorcycle Custom Assembly RK-3935

11.57 HP @ 5203 RPM
 		Get Pricing and Buy
RK-3935 Air Intake
2011 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 96 CI - All Motorcycle Aircharger 63-1125

7.78 HP @ 4953 RPM
 		Get Pricing and Buy
63-1125 Air Intake
2011 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 96 CI - All Motorcycle Aircharger 63-1125P

7.78 HP @ 4953 RPM
 		Get Pricing and Buy
63-1125P Air Intake
2011 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 96 CI - 1-5/8 inch tall filter Motorcycle Custom Assembly RK-3909-1

6.05 HP @ 5206 RPM
 		Get Pricing and Buy
RK-3909-1 Air Intake
2011 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 96 CI - 2-1/4 in tall filter Motorcycle Custom Assembly RK-3910-1

10.76 HP @ 5206 RPM
 		Get Pricing and Buy
RK-3910-1 Air Intake
2011 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 96 CI - All Motorcycle Custom Assembly RK-3932

7.16 HP @ 5206 RPM
 		Get Pricing and Buy
RK-3932 Air Intake
2011 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 96 CI - All Motorcycle Custom Assembly RK-3933

7 HP @ 5204 RPM
 		Get Pricing and Buy
RK-3933 Air Intake
2011 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 96 CI - All Motorcycle Custom Assembly RK-3934

10.23 HP @ 5155 RPM
 		Get Pricing and Buy
RK-3934 Air Intake
2011 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 96 CI - All Motorcycle Custom Assembly RK-3935

11.57 HP @ 5203 RPM
 		Get Pricing and Buy
RK-3935 Air Intake
2010 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 96 CI - All Motorcycle Aircharger 63-1125

7.78 HP @ 4953 RPM
 		Get Pricing and Buy
63-1125 Air Intake
2010 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 96 CI - All Motorcycle Aircharger 63-1125P

7.78 HP @ 4953 RPM
 		Get Pricing and Buy
63-1125P Air Intake
2010 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 96 CI - 1-5/8 inch tall filter Motorcycle Custom Assembly RK-3909-1

6.05 HP @ 5206 RPM
 		Get Pricing and Buy
RK-3909-1 Air Intake
2010 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 96 CI - 2-1/4 in tall filter Motorcycle Custom Assembly RK-3910-1

10.76 HP @ 5206 RPM
 		Get Pricing and Buy
RK-3910-1 Air Intake
2010 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 96 CI - All Motorcycle Custom Assembly RK-3932

7.16 HP @ 5206 RPM
 		Get Pricing and Buy
RK-3932 Air Intake
2010 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 96 CI - All Motorcycle Custom Assembly RK-3933

7 HP @ 5204 RPM
 		Get Pricing and Buy
RK-3933 Air Intake
2010 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 96 CI - All Motorcycle Custom Assembly RK-3934

10.23 HP @ 5155 RPM
 		Get Pricing and Buy
RK-3934 Air Intake
2010 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo 96 CI - All Motorcycle Custom Assembly RK-3935

11.57 HP @ 5203 RPM
 		Get Pricing and Buy
RK-3935 Air Intake
Estimated horsepower gains based on similar vehicle dynamometer test. Results will vary. K&N manufactures performance air intakes for cars, trucks, motorcycles, RVs, ATVs, Side x Sides and more.

Copyright © 2012 K&N Engineering, Inc. All Rights Reserved.