K&N Intake System- for Harley-Davidson
Part # RK-3951
Features
- Guaranteed to increase horsepower
- 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
- Easy to install, usually in 90 minutes or less
Description
K& N Street Metal Air Intake Systems for Harley Davidson motorcycles replace the restrictive stock OE air cleaner with an oversized K& N High-Flow Air Filter and a high-volume cast aluminum housing. If you're looking for an aggressive appearance but want a significant increase in airflow, resulting in more power, this high-flow air intake system is exactly what your Harley needs. Installation is so simple, it can usually be done in 90 minutes or less. The K& N air filter is washable, reusable, pre-oiled and ready for installation. This intake system features a matte black housing with silver details and sanded fins. Internal breathers provide a sleek, clean appearance. This air intake has a classic styling with a savage appeal.
Specifications
| Air Filter Color | Red |
|---|---|
| Air Filter Height | 2.469 in (63 mm) |
| Air Filter Included | Yes |
| Air Filter Material | Cotton Gauze |
| Air Filter Washable | Yes |
| CARB EO Number | D-269-59 |
| Color / Finish | Red Filter, Black Housing |
| Estimated Horsepower Gain | 6.04 HP @ 4907 RPM |
| Housing Material | Aluminum |
| Item Type | High Performance |
| Mounting Hardware Included | Yes |
| Overall Height | 3.25 in (83 mm) |
| Package Contents | 1 Air Filter |
| Package Material | Paperboard |
| Package Quantity | 1 |
| Package Type | Box |
| Product Style | Motorcycle Intake System |
| Replacement Filter | E-3987 |
| Street Legal In All US States | Not legal for sale or use in California on any pollution controlled motor vehicle. NOTE: Some specific models and years may be legal in CA. Check the CARB status on your parts at knfilters.com. |
| Top Material | Black Powder Coated |
| TUV Approved (Europe) | No |
| Weight | 5 lb (2.3 kg) |
| UPC / GTIN | 00024844364623 |
| Warranty | No-Hassle Lifetime Limited warranty |
| Year | Make | Model | Note |
|---|---|---|---|
| 2008 - 2013 | Harley-Davidson | FLHRC Road King Classic | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2008 - 2016 | Harley-Davidson | FLHR Road King | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2008 | Harley-Davidson | FLHRSE4 Screamin Eagle Road King | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2008 - 2013 | Harley-Davidson | FLHTC Electra Glide Classic | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2008 - 2013 | Harley-Davidson | FLHTCU Electra Glide Ultra Classic | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2010 | Harley-Davidson | FLHTCUSE5 CVO Ultra Classic Electra Glide | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2009 - 2013 | Harley-Davidson | FLHTCUTG Tri Glide Ultra Classic | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2008 - 2009 | Harley-Davidson | FLHT Electra Glide Standard | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2011 - 2014 | Harley-Davidson | FLHTK Electra Glide Ultra Limited | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2015 - 2016 | Harley-Davidson | FLHTKL Ultra Limited Low | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2015 - 2016 | Harley-Davidson | FLHTK Ultra Limited | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2014 - 2016 | Harley-Davidson | FLHXS Street Glide Special | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2008 - 2016 | Harley-Davidson | FLHX Street Glide | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2010 - 2011 | Harley-Davidson | FLHXXX Street Glide Trike | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2015 - 2016 | Harley-Davidson | FLRT Freewheeler | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2016 - 2017 | Harley-Davidson | FLS Softail Slim | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2016 - 2017 | Harley-Davidson | FLSS Softail Slim S | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2016 - 2017 | Harley-Davidson | FLSTC Heritage Softail Classic | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2016 - 2017 | Harley-Davidson | FLSTFB Fat Boy Lo | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2016 - 2017 | Harley-Davidson | FLSTFBS Fat Boy S | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2016 - 2017 | Harley-Davidson | FLSTF Fat Boy | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2016 - 2017 | Harley-Davidson | FLSTN Softail Deluxe | California Air Resources Board Exempt: No; Motorcycle Intake System - RK Series Shaker - Black |
| 2008 - 2010 | Harley-Davidson | FLTR Road Glide | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2011 - 2013 | Harley-Davidson | FLTRU Road Glide Ultra | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2015 - 2016 | Harley-Davidson | FLTRX Road Glide | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2010 - 2013 | Harley-Davidson | FLTRX Road Glide Custom | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2015 - 2016 | Harley-Davidson | FLTRXS Road Glide Special | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |
| 2016 - 2017 | Harley-Davidson | FXSB Breakout | California Air Resources Board Exempt: Yes; CARB EO: D-269-59; Motorcycle Intake System - RK Series Shaker - Black |