World's Largest Aftermarket Motorcycle Parts and Accessories Superstore!


K&N RK Series Air filter Kit

Product may vary from photo(s).

Everyday Low Price: $339.99

Gold Club Price: What's This? $305.99

J&P Part: 402-915

Rating: Read Reviews

This item qualifies for free ground shipping


Important warranty information: Warranty Information

This product has an attached note. View Product Note

This product was proudly made in the USA Made In The USA

K&N RK Series Air filter Kit

• The latest edition to K&N’s RK series air cleaners

• Developed to get more horsepower from your engine

• Includes an innovative powder coated billet aluminum backing plate that eliminates external breathers

• Features a built in dyno proven velocity stack

• Provides a significant airflow increase without sacrificing filtration

• Fits under the stock air cleaner cover without any modifications

Product Specs

  • Design: High Performance Stock Replacement
  • Finish: Powder Coated
  • Manufacturer Part Number: RK3929
  • Material: Billet Aluminum
  • Product Color: Black
  • Sold in Units: Kit
  • Style: High Performance Stock Replacement


Harley-Davidson® Models

  • Sportster 1200 50th Anniversary XL 50 : 2007
  • Sportster 1200 CP XL1200CP : 2012
  • Sportster 1200 Custom Limited A XL1200CA : 2014
  • Sportster 1200 Custom Limited B XL1200CB : 2014
  • Sportster 1200 Custom XL1200C : 2007–2010, 2012–2013
  • Sportster 1200 Custom XL1200C Anniversary : 2013
  • Sportster 1200 Forty-Eight XL1200X : 2011–2013
  • Sportster 1200 Low XL1200L : 2007–2011
  • Sportster 1200 Nightster XL1200N : 2007–2012
  • Sportster 1200 Roadster XL1200R : 2007–2009
  • Sportster 1200 Seventy-Two XL1200V : 2012–2013
  • Sportster 883 Custom XL883C : 2007–2010
  • Sportster 883 Iron XL883N : 2009–2013
  • Sportster 883 Low XL883L : 2007–2011
  • Sportster 883 Roadster XL883R : 2007–2012
  • Sportster 883 Standard XL883 : 2007–2009
  • Sportster 883 SuperLow XL883L : 2012–2013
  • Sportster Custom Limited A XL1200CA : 2013
  • Sportster Custom XL1200C : 2014
  • Sportster Custom XL1200CP : 2014
  • Sportster Forty-Eight XL1200X : 2014
  • Sportster Iron XL883N : 2014
  • Sportster Seventy-Two XL1200V : 2014
  • Sportster SuperLow XL883L : 2014

Customer Reviews


The K&N Air Cleaner was very straightforward to install, and was complete. It is unobtrusive on the FXDX and works well.


The K&N filter assembly installed easily using the simple to follow instructions. The filter lets the engine breath easier giving it better throttle responce and it retains the stock look.


Easy to install and makes the bike look better and also increases performance. Great Product.


The K&N high flow air cleaner was easy to install and significantly improved the air intake and performance. The size of the air filter did not extend further than the original equipmet air cleaner. The installation instructions were accurate and easy to follow. I am glad that I chose the K&N air cleaner.


Easy installation, a must for any V&H pipe and FuelPak.


Fairly easy to install.Noticeable horsepower increase and throttle responce.


pechased the K/N filter assembly for my 2006 Road King Harley. It is every thing thaty I have read about. Installed easy, fits nice, retains the stock look. Performance and workmanship is top shelf I would recomend this product to all.


Beauty ring listed in catalog was missing


Works as advertised.


Straight forward installation. Good instructions. Think the design could be better. Improved throttle response. Happy with the purchase. Have K&N in all vehicles.


Works great, easy to install.


Easy install. Was able to use stock air filter cover.


Easy install, and could tell a difference! I'd recommend this, if you want to still keep the "stock" look.


You need to have the stock throttle body support bracket still attached to be able to install this kit.


Super easy install. I like being able to use my stock breather cover. Keeps the water out and nobody knows what you have. I added a super tuner to take better advantage of kit

Important Product Notes

• This filter is pre-oiled and ready to install, periodic cleaning required for warranty. Use 400-862 K&N Filter Re-charge kit when cleaning