K&N Street Metal Air Cleaner Assembly (MPN: RK-3952)

Enhance airflow and performance with a sleek design for Harley Davidson

The K&N Street Metal Air Cleaner Assembly is engineered to replace the restrictive stock air cleaner on Harley Davidson motorcycles. This assembly features a high-flow air filter and a high-volume cast aluminum housing, designed to significantly increase airflow and improve engine performance. With an overall height of 4-1/4 inches and a filter height of 2.39 inches, this assembly is compact yet powerful, ensuring optimal throttle response and engine sound.

Constructed from durable aluminum with a powder-coated finish, the assembly boasts a modern oval shape in matte black, complemented by silver details and sanded fins for a streamlined appearance. The washable and reusable K&N cotton gauze air filter is pre-oiled and ready for installation, providing outstanding filtration and protection. Internal breathers replace external OE breathers, contributing to a clean and sleek look.

Installation is straightforward, typically taking 90 minutes or less, making it accessible for motorcycle enthusiasts looking to enhance their ride. This air cleaner assembly not only improves airflow but is also guaranteed to increase horsepower, making it a valuable addition to any Harley Davidson motorcycle.

Features

• Designed To Improve Throttle Response And Engine Sound
• Cast Aluminum High-Volume, Performance Air Intake Housing In Black
• Washable And Reusable K&N High-Flow Cotton Air Filter That Provides Outstanding Performance And Protection
• Integrated Internal Velocity Stack
• Built-In Breathers Replace External OE Breathers
• Guaranteed To Increase Horsepower
• Easy To Install, Usually In 90 Minutes Or Less

Specifications

• Manufacturer: K & N Filters
• Manufacturer Part Number: RK-3952
• Height (IN): 4-1/4 Inch
• Top Design: K&N Logo
• Finish: Powder Coated
• Color: Silver
• Material: Aluminum
• Air Filter Height (IN): 2.39 Inch
• Air Filter Color: Red
• Air Filter Material: Cotton Gauze
• Estimated Install Time (Hours): 0.5

Compatibility / Fit

• 2008-2019 Harley Davidson FLHR Road King
• 2008-2013 Harley Davidson FLHRC Road King Classic
• 2008-2008 Harley Davidson FLHRSE4 Screamin Eagle Road King
• 2008-2009 Harley Davidson FLHT Electra Glide Standard
• 2008-2013 Harley Davidson FLHTC Electra Glide Classic
• 2008-2013 Harley Davidson FLHTCU Electra Glide Ultra Classic
• 2010-2010 Harley Davidson FLHTCUSE5 CVO Ultra Classic Electra Glide
• 2009-2013 Harley Davidson FLHTCUTG Tri Glide Ultra Classic
• 2011-2014 Harley Davidson FLHTK Electra Glide Ultra Limited
• 2015-2019 Harley Davidson FLHTK Ultra Limited
• 2015-2019 Harley Davidson FLHTKL Ultra Limited Low
• 2008-2015 Harley Davidson FLHX Street Glide
• 2014-2019 Harley Davidson FLHXS Street Glide Special
• 2010-2011 Harley Davidson FLHXXX Street Glide Trike
• 2015-2019 Harley Davidson FLRT Freewheeler
• 2016-2017 Harley Davidson FLS Softail Slim
• 2016-2017 Harley Davidson FLSS Softail Slim S
• 2016-2017 Harley Davidson FLSTC Heritage Softail Classic
• 2016-2017 Harley Davidson FLSTF Fat Boy
• 2016-2016 Harley Davidson FLSTFB Fat Boy Lo
• 2016-2017 Harley Davidson FLSTFBS Fat Boy S
• 2016-2017 Harley Davidson FLSTN Softail Deluxe
• 2008-2009 Harley Davidson FLTR Road Glide
• 2011-2013 Harley Davidson FLTRU Road Glide Ultra
• 2015-2019 Harley Davidson FLTRX Road Glide
• 2010-2013 Harley Davidson FLTRX Road Glide Custom
• 2015-2019 Harley Davidson FLTRXS Road Glide Special
• 2017-2017 Harley Davidson FXDWG Dyna Wide Glide
• 2016-2017 Harley Davidson FXSB Breakout

Technical Documents

• RK-3952_inst.pdf
• RK-3952_dyno.pdf