K&N Air Cleaner Assembly RK Series (MPN: RK-3921)

Enhance performance and style for Harley Davidson motorcycles with this chrome air cleaner.

The K&N Air Cleaner Assembly RK Series is engineered specifically for Harley Davidson motorcycles, offering a unique blend of performance and aesthetic appeal. Constructed from high-quality billet aluminum, this air cleaner is polished to a luster finish and chrome plated, ensuring it complements the look of any show bike. The round design features a flame motif, adding a distinctive touch to the motorcycle's appearance.

With a neck flange diameter of 2.4 inches and a height of 2.5 inches, this air cleaner is designed for easy installation and optimal fit on all touring models. The assembly includes a red cotton gauze filter, which provides excellent filtration and airflow, enhancing engine performance. Each unit comes complete with all necessary mounting hardware, making it ready for immediate use.

Features

• Remarkable Combination Of Performance And Style
• Machined From Billet Aluminum, Luster Polished, Then Chrome Plated To Complement Your Show Bike

Specifications

• Manufacturer: K & N Filters
• Manufacturer Part Number: RK-3921
• Application: Harley Davidson Motorcycles
• Shape: Round
• Height (IN): 2-1/2 Inch
• Top Design: Flame Design
• Flange Diameter (IN): 2.4 Inch
• Finish: Chrome Plated
• Color: Silver
• Material: Aluminum
• Air Filter Diameter (IN): 7-1/2 Inch
• Air Filter Height (IN): 2-1/4 Inch
• Air Filter Color: Red
• Air Filter Material: Cotton Gauze Filter
• Wing Nut Type: No Wing Nut
• Wing Nut Color: No Wing Nut
• Estimated Install Time (Hours): 0.5

Compatibility / Fit

• 1994-1997 Harley Davidson FLHR Road King
• 1992-1993 Harley Davidson FLHS Electra Glide Sport
• 1995-1997 Harley Davidson FLHT Electra Glide Standard
• 1992-1997 Harley Davidson FLHTC Electra Glide Classic
• 1992-1997 Harley Davidson FLHTCU Electra Glide Ultra Classic
• 1996-1996 Harley Davidson FLHTCUI Electra Glide Ultra Classic
• 1992-1997 Harley Davidson FLSTC Heritage Softail Classic
• 1992-1997 Harley Davidson FLSTF Fat Boy
• 1993-1993 Harley Davidson FLSTN Heritage Softail Nostalgia
• 1994-1996 Harley Davidson FLSTN Heritage Softail Special
• 1997-1997 Harley Davidson FLSTS Heritage Springer
• 1992-1995 Harley Davidson FLTCU Tour Glide Ultra Classic
• 1995-1997 Harley Davidson FXD Dyna Super Glide
• 1992-1992 Harley Davidson FXDB-D Dyna Glide Daytona
• 1994-1997 Harley Davidson FXDL Dyna Low Rider
• 1994-1997 Harley Davidson FXDS-Conv Dyna Convertible
• 1993-1997 Harley Davidson FXDWG Dyna Wide Glide
• 1992-1994 Harley Davidson FXLR Low Rider Custom
• 1992-1993 Harley Davidson FXRS-Conv Low Rider Sport Convertible
• 1992-1993 Harley Davidson FXRS-SP Low Rider Sport
• 1992-1992 Harley Davidson FXRT Sport Glide
• 1992-1997 Harley Davidson FXSTC Softail Custom
• 1992-1997 Harley Davidson FXSTS Springer Softail
• 1995-1997 Harley Davidson FXSTSB Bad Boy

Technical Documents

• 17991_inst.pdf