K&N Cold Air Intakes for the Harley Davidson FXDF Fat Bob

Harley Davidson FXDF Fat Bob Powersports Cold Air Intakes

Buy now from the K&N Store and get a 100% money back guarantee on any cold air intake!
  • Designed to increase power and torque
  • K&N Million Mile Limited Warranty®
  • Replaces restrictive factory air intake system
  • Easy to install performance
Add more horsepower to your Harley Davidson FXDF Fat Bob with a K&N cold air intake.
K&N Powersports Cold Air Intake System
Vehicle DescriptionPart Number Product Image
2014 Harley Davidson FXDF Fat Bob 103 CI - O-Ring Kit for SS-171
Motorcycle
2014 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
SS-002 Get Pricing and Buy SS-002 FXDF Fat Bob Accessory
2014 Harley Davidson FXDF Fat Bob 103 CI - All
Motorcycle
2014 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
RK-3931

Est. Power Gain
6.54 HP @ 5100 RPM
Get Pricing and Buy RK-3931 FXDF Fat Bob Custom Assembly
2014 Harley Davidson FXDF Fat Bob 103 CI - All
Motorcycle
2014 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
RK-3932

Est. Power Gain
7.16 HP @ 5206 RPM
Get Pricing and Buy RK-3932 FXDF Fat Bob Custom Assembly
2014 Harley Davidson FXDF Fat Bob 103 CI - All
Motorcycle
2014 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
RK-3933

Est. Power Gain
7 HP @ 5204 RPM
Get Pricing and Buy RK-3933 FXDF Fat Bob Custom Assembly
2014 Harley Davidson FXDF Fat Bob 103 CI - All
Motorcycle
2014 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
RK-3934

Est. Power Gain
10.23 HP @ 5155 RPM
Get Pricing and Buy RK-3934 FXDF Fat Bob Custom Assembly
2014 Harley Davidson FXDF Fat Bob 103 CI - All
Motorcycle
2014 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
RK-3935

Est. Power Gain
11.57 HP @ 5203 RPM
Get Pricing and Buy RK-3935 FXDF Fat Bob Custom Assembly
2014 Harley Davidson FXDF Fat Bob 103 CI - Exc. lower fairings
Motorcycle
2014 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
63-1125

Est. Power Gain
7.78 HP @ 4953 RPM
Get Pricing and Buy 63-1125 FXDF Fat Bob Aircharger Cold Air Intake
2014 Harley Davidson FXDF Fat Bob 103 CI - Exc. lower fairings
Motorcycle
2014 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
63-1125P

Est. Power Gain
7.78 HP @ 4953 RPM
Get Pricing and Buy 63-1125P FXDF Fat Bob Aircharger Cold Air Intake
2013 Harley Davidson FXDF Fat Bob 103 CI - O-Ring Kit for SS-171
Motorcycle
2013 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
SS-002 Get Pricing and Buy SS-002 FXDF Fat Bob Accessory
2013 Harley Davidson FXDF Fat Bob 103 CI - All
Motorcycle
2013 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
RK-3931

Est. Power Gain
6.54 HP @ 5100 RPM
Get Pricing and Buy RK-3931 FXDF Fat Bob Custom Assembly
2013 Harley Davidson FXDF Fat Bob 103 CI - All
Motorcycle
2013 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
RK-3932

Est. Power Gain
7.16 HP @ 5206 RPM
Get Pricing and Buy RK-3932 FXDF Fat Bob Custom Assembly
2013 Harley Davidson FXDF Fat Bob 103 CI - All
Motorcycle
2013 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
RK-3933

Est. Power Gain
7 HP @ 5204 RPM
Get Pricing and Buy RK-3933 FXDF Fat Bob Custom Assembly
2013 Harley Davidson FXDF Fat Bob 103 CI - All
Motorcycle
2013 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
RK-3934

Est. Power Gain
10.23 HP @ 5155 RPM
Get Pricing and Buy RK-3934 FXDF Fat Bob Custom Assembly
2013 Harley Davidson FXDF Fat Bob 103 CI - All
Motorcycle
2013 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
RK-3935

Est. Power Gain
11.57 HP @ 5203 RPM
Get Pricing and Buy RK-3935 FXDF Fat Bob Custom Assembly
2013 Harley Davidson FXDF Fat Bob 103 CI - Exc. lower fairings
Motorcycle
2013 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
63-1125

Est. Power Gain
7.78 HP @ 4953 RPM
Get Pricing and Buy 63-1125 FXDF Fat Bob Aircharger Cold Air Intake
2013 Harley Davidson FXDF Fat Bob 103 CI - Exc. lower fairings
Motorcycle
2013 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
63-1125P

Est. Power Gain
7.78 HP @ 4953 RPM
Get Pricing and Buy 63-1125P FXDF Fat Bob Aircharger Cold Air Intake
2012 Harley Davidson FXDF Fat Bob 103 CI - O-Ring Kit for SS-171
Motorcycle
2012 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
SS-002 Get Pricing and Buy SS-002 FXDF Fat Bob Accessory
2012 Harley Davidson FXDF Fat Bob 103 CI - All
Motorcycle
2012 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
RK-3931

Est. Power Gain
6.54 HP @ 5100 RPM
Get Pricing and Buy RK-3931 FXDF Fat Bob Custom Assembly
2012 Harley Davidson FXDF Fat Bob 103 CI - All
Motorcycle
2012 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
RK-3932

Est. Power Gain
7.16 HP @ 5206 RPM
Get Pricing and Buy RK-3932 FXDF Fat Bob Custom Assembly
2012 Harley Davidson FXDF Fat Bob 103 CI - All
Motorcycle
2012 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
RK-3933

Est. Power Gain
7 HP @ 5204 RPM
Get Pricing and Buy RK-3933 FXDF Fat Bob Custom Assembly
2012 Harley Davidson FXDF Fat Bob 103 CI - All
Motorcycle
2012 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
RK-3934

Est. Power Gain
10.23 HP @ 5155 RPM
Get Pricing and Buy RK-3934 FXDF Fat Bob Custom Assembly
2012 Harley Davidson FXDF Fat Bob 103 CI - All
Motorcycle
2012 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
RK-3935

Est. Power Gain
11.57 HP @ 5203 RPM
Get Pricing and Buy RK-3935 FXDF Fat Bob Custom Assembly
2012 Harley Davidson FXDF Fat Bob 103 CI - Exc. lower fairings
Motorcycle
2012 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
63-1125

Est. Power Gain
7.78 HP @ 4953 RPM
Get Pricing and Buy 63-1125 FXDF Fat Bob Aircharger Cold Air Intake
2012 Harley Davidson FXDF Fat Bob 103 CI - Exc. lower fairings
Motorcycle
2012 Harley Davidson FXDF Fat Bob 103 CI Cold Air Intake
63-1125P

Est. Power Gain
7.78 HP @ 4953 RPM
Get Pricing and Buy 63-1125P FXDF Fat Bob Aircharger Cold Air Intake
2011 Harley Davidson FXDF Fat Bob 96 CI - O-Ring Kit for SS-171
Motorcycle
2011 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
SS-002 Get Pricing and Buy SS-002 FXDF Fat Bob Accessory
2011 Harley Davidson FXDF Fat Bob 96 CI - All
Motorcycle
2011 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
RK-3931

Est. Power Gain
6.54 HP @ 5100 RPM
Get Pricing and Buy RK-3931 FXDF Fat Bob Custom Assembly
2011 Harley Davidson FXDF Fat Bob 96 CI - All
Motorcycle
2011 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
RK-3932

Est. Power Gain
7.16 HP @ 5206 RPM
Get Pricing and Buy RK-3932 FXDF Fat Bob Custom Assembly
2011 Harley Davidson FXDF Fat Bob 96 CI - All
Motorcycle
2011 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
RK-3933

Est. Power Gain
7 HP @ 5204 RPM
Get Pricing and Buy RK-3933 FXDF Fat Bob Custom Assembly
2011 Harley Davidson FXDF Fat Bob 96 CI - All
Motorcycle
2011 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
RK-3934

Est. Power Gain
10.23 HP @ 5155 RPM
Get Pricing and Buy RK-3934 FXDF Fat Bob Custom Assembly
2011 Harley Davidson FXDF Fat Bob 96 CI - All
Motorcycle
2011 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
RK-3935

Est. Power Gain
11.57 HP @ 5203 RPM
Get Pricing and Buy RK-3935 FXDF Fat Bob Custom Assembly
2011 Harley Davidson FXDF Fat Bob 96 CI - Exc. lower fairings
Motorcycle
2011 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
63-1125

Est. Power Gain
7.78 HP @ 4953 RPM
Get Pricing and Buy 63-1125 FXDF Fat Bob Aircharger Cold Air Intake
2011 Harley Davidson FXDF Fat Bob 96 CI - Exc. lower fairings
Motorcycle
2011 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
63-1125P

Est. Power Gain
7.78 HP @ 4953 RPM
Get Pricing and Buy 63-1125P FXDF Fat Bob Aircharger Cold Air Intake
2010 Harley Davidson FXDF Fat Bob 96 CI - O-Ring Kit for SS-171
Motorcycle
2010 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
SS-002 Get Pricing and Buy SS-002 FXDF Fat Bob Accessory
2010 Harley Davidson FXDF Fat Bob 96 CI - All
Motorcycle
2010 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
RK-3931

Est. Power Gain
6.54 HP @ 5100 RPM
Get Pricing and Buy RK-3931 FXDF Fat Bob Custom Assembly
2010 Harley Davidson FXDF Fat Bob 96 CI - All
Motorcycle
2010 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
RK-3932

Est. Power Gain
9.84 HP @ 5206 RPM
Get Pricing and Buy RK-3932 FXDF Fat Bob Custom Assembly
2010 Harley Davidson FXDF Fat Bob 96 CI - All
Motorcycle
2010 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
RK-3933

Est. Power Gain
10.17 HP @ 5204 RPM
Get Pricing and Buy RK-3933 FXDF Fat Bob Custom Assembly
2010 Harley Davidson FXDF Fat Bob 96 CI - All
Motorcycle
2010 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
RK-3934

Est. Power Gain
10.23 HP @ 5155 RPM
Get Pricing and Buy RK-3934 FXDF Fat Bob Custom Assembly
2010 Harley Davidson FXDF Fat Bob 96 CI - All
Motorcycle
2010 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
RK-3935

Est. Power Gain
11.57 HP @ 5202 RPM
Get Pricing and Buy RK-3935 FXDF Fat Bob Custom Assembly
2010 Harley Davidson FXDF Fat Bob 96 CI - Exc. lower fairings
Motorcycle
2010 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
63-1125

Est. Power Gain
7.78 HP @ 4953 RPM
Get Pricing and Buy 63-1125 FXDF Fat Bob Aircharger Cold Air Intake
2010 Harley Davidson FXDF Fat Bob 96 CI - Exc. lower fairings
Motorcycle
2010 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
63-1125P

Est. Power Gain
7.78 HP @ 4953 RPM
Get Pricing and Buy 63-1125P FXDF Fat Bob Aircharger Cold Air Intake
2009 Harley Davidson FXDF Fat Bob 96 CI - O-Ring Kit for SS-171
Motorcycle
2009 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
SS-002 Get Pricing and Buy SS-002 FXDF Fat Bob Accessory
2009 Harley Davidson FXDF Fat Bob 96 CI - All
Motorcycle
2009 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
RK-3931

Est. Power Gain
6.54 HP @ 5100 RPM
Get Pricing and Buy RK-3931 FXDF Fat Bob Custom Assembly
2009 Harley Davidson FXDF Fat Bob 96 CI - All
Motorcycle
2009 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
RK-3932

Est. Power Gain
7.16 HP @ 5206 RPM
Get Pricing and Buy RK-3932 FXDF Fat Bob Custom Assembly
2009 Harley Davidson FXDF Fat Bob 96 CI - All
Motorcycle
2009 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
RK-3933

Est. Power Gain
7 HP @ 5204 RPM
Get Pricing and Buy RK-3933 FXDF Fat Bob Custom Assembly
2009 Harley Davidson FXDF Fat Bob 96 CI - All
Motorcycle
2009 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
RK-3934

Est. Power Gain
10.23 HP @ 5155 RPM
Get Pricing and Buy RK-3934 FXDF Fat Bob Custom Assembly
2009 Harley Davidson FXDF Fat Bob 96 CI - All
Motorcycle
2009 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
RK-3935

Est. Power Gain
11.57 HP @ 5203 RPM
Get Pricing and Buy RK-3935 FXDF Fat Bob Custom Assembly
2009 Harley Davidson FXDF Fat Bob 96 CI - Exc. lower fairings
Motorcycle
2009 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
63-1125

Est. Power Gain
7.78 HP @ 4953 RPM
Get Pricing and Buy 63-1125 FXDF Fat Bob Aircharger Cold Air Intake
2009 Harley Davidson FXDF Fat Bob 96 CI - Exc. lower fairings
Motorcycle
2009 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
63-1125P

Est. Power Gain
7.78 HP @ 4953 RPM
Get Pricing and Buy 63-1125P FXDF Fat Bob Aircharger Cold Air Intake
2008 Harley Davidson FXDF Fat Bob 96 CI - O-Ring Kit for SS-171
Motorcycle
2008 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
SS-002 Get Pricing and Buy SS-002 FXDF Fat Bob Accessory
2008 Harley Davidson FXDF Fat Bob 96 CI - All
Motorcycle
2008 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
RK-3931

Est. Power Gain
6.54 HP @ 5100 RPM
Get Pricing and Buy RK-3931 FXDF Fat Bob Custom Assembly
2008 Harley Davidson FXDF Fat Bob 96 CI - All
Motorcycle
2008 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
RK-3932

Est. Power Gain
7.16 HP @ 5206 RPM
Get Pricing and Buy RK-3932 FXDF Fat Bob Custom Assembly
2008 Harley Davidson FXDF Fat Bob 96 CI - All
Motorcycle
2008 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
RK-3933

Est. Power Gain
7 HP @ 5204 RPM
Get Pricing and Buy RK-3933 FXDF Fat Bob Custom Assembly
2008 Harley Davidson FXDF Fat Bob 96 CI - All
Motorcycle
2008 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
RK-3934

Est. Power Gain
10.23 HP @ 5155 RPM
Get Pricing and Buy RK-3934 FXDF Fat Bob Custom Assembly
2008 Harley Davidson FXDF Fat Bob 96 CI - All
Motorcycle
2008 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
RK-3935

Est. Power Gain
11.57 HP @ 5203 RPM
Get Pricing and Buy RK-3935 FXDF Fat Bob Custom Assembly
2008 Harley Davidson FXDF Fat Bob 96 CI - Exc. lower fairings
Motorcycle
2008 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
63-1125

Est. Power Gain
7.78 HP @ 4953 RPM
Get Pricing and Buy 63-1125 FXDF Fat Bob Aircharger Cold Air Intake
2008 Harley Davidson FXDF Fat Bob 96 CI - Exc. lower fairings
Motorcycle
2008 Harley Davidson FXDF Fat Bob 96 CI Cold Air Intake
63-1125P

Est. Power Gain
7.78 HP @ 4953 RPM
Get Pricing and Buy 63-1125P FXDF Fat Bob Aircharger Cold Air Intake

K&N replacement air filters can help your car or truck run better.