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K&N Filter Kit for 04-09 Harley Davidson Sportster Custom Assembly


  • Increases Horsepower
  • Increases Filtration
  • Washable and Reuseable Filter
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Pricing: $290.99


K&N's Sportster RK Series Air Cleaner will get more horsepower from your Harley Davidson Sportster motorcycle. This complete assembly fits inside the stock air cleaner cover, and provides a significant increase in airflow.

Application List

2004-2011 Harley Davidson XL1200C Sportster Custom

2007-2011 Harley Davidson XL1200N Sportster Nightster

2010-2011 Harley Davidson XL1200X Forty-Eight

2005-2011 Harley Davidson XL883L Sportster Low

2010-2011 Harley Davidson XL883N Iron 883

2006-2010 Harley Davidson XL1200L Sportster Low

2004-2010 Harley Davidson XL883C Sportster Custom

2004-2008 Harley Davidson XL1200R Sportster Roadster

2004-2008 Harley Davidson XL883 Sportster

2007 Harley Davidson XL50 50th Anniversary Sportster

2005-2007 Harley Davidson XL883R Sportster


Height: 2.5 in (64 mm)

Replacement Filter: E-3040

Neck Flange: 2.458 in (62 mm)

Street Legal in All US States: See Application List

Horsepower Gain: 4.4 HP @ 5497 RPM


  • RK-3929
  • RK-3929
  • K&N
  • New

Shipping Information

  • Item Requires Shipping
  • 3.1 lbs.
  • W9.5000” x H4.9000” x L11.8000”

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