If you’re looking to give your Harley a little boost, the K&N Street Metal Series High-Flow Air Intake System is worth considering. I’ve had this setup on my bike for a while now, and I can honestly say it’s made a noticeable difference in both performance and style. Gone is the stock air cleaner, replaced by a robust, high-flow intake that really opens up the airflow. It’s like giving your engine a deep breath of fresh air, and you can feel it when you hit the throttle.
What I love about this system is its sturdy construction. The custom aluminum backing plate mounts directly to the throttle body, featuring an integrated internal-run breather system that keeps things tidy and efficient. Plus, it comes with a K&N air filter that’s not just any filter. This one is made from high-quality cotton gauze, which means it’s washable and reusable. Just clean it up, re-oil it, and you’re good to go. It’s ready to install right out of the box, so you won’t be left waiting around to hit the road.
Now let’s talk numbers. You’re looking at an estimated horsepower gain of about 7 HP at 5204 RPM. That’s not just a marketing gimmick; you can actually feel the difference in acceleration, especially when you’re cruising at higher speeds. The inlet diameter is 2.281 inches, which is a nice upgrade from the stock setup. And it’s street legal in all US states, so you don’t have to worry about any run-ins with the law.
The black round custom cover adds a touch of elegance to your ride, making it perfect whether you’re showing off at bike night or just taking a leisurely ride on the weekend. And if you’re concerned about vibrations, K&N has you covered with a durable mounting gasket included in the kit.
Here are some specs to keep in mind:
Installation is straightforward, and if you need a little guidance, K&N provides detailed instructions here. Plus, if you’re curious about the dyno results, you can check those out here.
This air intake system fits a wide range of Harley models, including the Road King, Electra Glide, and Fat Boy, just to name a few. So, if you’re ready to enhance your ride and unleash some extra power, this K&N intake system is definitely worth a look.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Vehicle Make/Model | Year | Trims |
|---|---|---|
| Harley-Davidson FLD Switchback | 2012-2016 | Base |
| Harley-Davidson FLHR Road King | 2007 | Base |
| Harley-Davidson FLHRI Road King | 2000-2006 | Base |
| Harley-Davidson FLHRS Road King Custom | 2007 | Base |
| Harley-Davidson FLHRSI Road King Custom | 2004-2006 | Base |
| Harley-Davidson FLHT Electra Glide Standard | 2007 | Base |
| Harley-Davidson FLHTCU Electra Glide Ultra Classic | 2007 | Base |
| Harley-Davidson FLHTI Electra Glide Standard | 2003-2006 | Base |
| Harley-Davidson FLHX Street Glide | 2007 | Base |
| Harley-Davidson FLHXI Street Glide | 2006 | Base |
| Harley-Davidson FLS Softail Slim | 2012-2015 | Base |
| Harley-Davidson FLSTF Fat Boy | 2007-2015 | Base |
| Harley-Davidson FLSTFB Fat Boy Lo | 2010-2015 | Base |
| Harley-Davidson FLSTFI Fat Boy | 2001-2006 | Base |
| Harley-Davidson FLSTI Heritage Softail | 2006 | Base |
| Harley-Davidson FLSTN Softail Deluxe | 2007-2015 | Base |
| Harley-Davidson FLSTNI Softail Deluxe | 2005-2006 | Base |
| Harley-Davidson FLSTSB Cross Bones | 2008-2011 | Base |
| Harley-Davidson FLSTSI Heritage Springer | 2001-2003 | Base |
| Harley-Davidson FLTR Road Glide | 2007 | Base |
| Harley-Davidson FLTRI Road Glide | 1999-2006 | Base |
| Harley-Davidson FXCW Rocker | 2008-2009 | Base |
| Harley-Davidson FXCWC Rocker C | 2008-2011 | Base |
| Harley-Davidson FXD Dyna Super Glide | 2007-2010 | Base |
| Harley-Davidson FXDB Street Bob | 2007-2017 | Base |
| Harley-Davidson FXDBI Street Bob | 2006 | Base |
| Harley-Davidson FXDC Super Glide Custom | 2007-2014 | Base |
| Harley-Davidson FXDCI Super Glide Custom | 2005-2006 | Base |
| Harley-Davidson FXDF Fat Bob | 2008-2017 | Base |
| Harley-Davidson FXDI Dyna Super Glide | 2004-2006 | Base |
| Harley-Davidson FXDI35 Dyna 35th Anniversary Super Glide | 2006 | Base |
| Harley-Davidson FXDL Dyna Low Rider | 2007-2009, 2014-2017 | Base |
| Harley-Davidson FXDL Low Rider | 2014-2017 | Base |
| Harley-Davidson FXDLI Dyna Low Rider | 2004-2006 | Base |
| Harley-Davidson FXDLS Low Rider S | 2017 | Base |
| Harley-Davidson FXDWG Dyna Wide Glide | 2007-2008, 2010-2017 | Base |
| Harley-Davidson FXDWGI Dyna Wide Glide | 2004-2006 | Base |
| Harley-Davidson FXS Blackline | 2011-2013 | Base |
| Harley-Davidson FXSB Breakout | 2014-2015 | Base |
| Harley-Davidson FXST Softail Standard | 2007 | Base |
| Harley-Davidson FXSTB Night Train | 2007-2009 | Base |
| Harley-Davidson FXSTBI Night Train | 2001-2006 | Base |
| Harley-Davidson FXSTC Softail Custom | 2007-2010 | Base |
| Harley-Davidson FXSTD Softail Deuce | 2007 | Base |
| Harley-Davidson FXSTDI Softail Deuce | 2001-2006 | Base |
| Harley-Davidson FXSTI Softail Standard | 2001-2006 | Base |
| Harley-Davidson FXSTSI Springer Softail | 2001-2006 | Base |

K&N, formally known as K&N Engineering, Inc., is the world’s leading manufacturer of washable performance air filters and cold air intake systems. K&N manufactures over 12,000 parts for a wide range of makes and models of motorcycles, cars, SUV, trucks, industrial applications, and more. K&N was founded in 1969 and is headquartered in Riverside, California in a complex of 10 buildings compromising approximately 400,000 square feet. K&N also operates facilities in China, England, and the Netherlands.
In the early 1960s, two motorcycle racers, Ken Johnson and Norm McDonald (K&N) developed a revolutionary idea for an air filter—one that could perform under the demands of dusty, dirty off-road environments. After experimenting with different types of filter media, they discovered that an oiled cotton design allowed the filter to capture contaminants efficiently, and also be washed and reused. It was right then and there that the original K&N High-Flow Air Filter was born. Fifty years later, K&N is still dominating the industry with leading filtration technology and innovative products that offer extraordinary protection for virtually every application out there.
What Makes K&N the Best?All K&N products undergo rigorous testing to make sure they adhere to and exceed demanding quality standards. These tests include power, torque, and airflow tests to confirm that the intake products are maximizing power boost while retaining engine safety. The company stands behind its product 100 percent with some of the most extensive warranties in the business – a Million Mile Limited warranty. K&N’s performance air intake systems are designed to improve airflow to the engine by replacing the restrictive factory system with a single aerodynamic tube and highly efficient filter media. The systems are available in two materials. The first is Polyethylene, which is used to produce 57 and 63 series intake systems. The second one is aluminum, which can be found on the 69 and 77 series intake systems.
Advantages of K&N IntakesThe benefits of adding a K&N intake system to your car are plenty. Firstly, it will increase your vehicle’s horsepower and torque, while also improving fuel economy and the appearance of your engine bay. What’s more, it will deliver a satisfying, more aggressive exhaust note at higher RPMs. Each K&N intake includes an oversized filtering unit, which can go up to 100,000 miles between cleanings, unlike paper filters that can become clogged easily and cannot be washed or reused. In other words, with K&N products, you will never have to replace your air filter again.
Why Install an Aftermarket Intake?Internal combustion engines all work as large air pumps. Air goes in, fuel is added, combustion occurs, and air goes out. This means there are two ways of increasing power: getting more air into the engine or making it easier for air to get out of the engine. Your air intake is responsible for filtering air before it enters your engine. Dirty air can damage the engine cylinder walls, so a high-quality filter is a must-have item. With a K&N system or filter, you increase airflow through the filter, which means more air is pulled into the engine. K&N does this without reducing filtration qualities, so your engine will live a long life.
Purchase K&N Intakes at Vivid RacingVivid Racing carries an extensive inventory of K&N products ranging from air filters, oil filters, air injection systems, fuel filters and pumps, sensors, carburetors, cold air intakes, and much, much more! If you cannot find a particular item above, please call us at (480) 966-3040 and we will help you find it. We are also here to answer any product questions, regarding usage, benefits, and fitment. Don’t delay! Improve your vehicle’s performance today with K&N Intakes.
K&N Oil Filters | K&N Replacement Filters | K&N 57 Series Intakes | K&N 69 Series Typhoon Intakes
K&N 77 Series Intakes