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The K&N RK-3941 Air Intake Packs a Power Punch Behind your Stock Harley® Cover
The K&N RK-3941 Air Intake Packs a Power Punch Behind your Stock Harley® Cover
Dec 13, 2016
The RK-3941 is a full intake system that adds performance to your Harley
So you want the performance and protection that a K&N intake provides, but you want to retain your factory Harley-Davidson® 103CI or 110CI Rushmore air cleaner cover? Fair enough. The K&N RK-3941 performance intake fits the bill. Your stock 2014 - 2017 intake shroud will bolt directly to the RK-3941 giving you a stealth horsepower and torque boosting modification.
While we are on the subject of performance, you should know that K&N guarantees a power gain with the RK-3941 air intake. While there are many variables in dynamometer testing, the results shown in K&N's dyno runs are impressive. When installed on an otherwise stock 103CI Harley® Ultra Limited, an estimated gain of over 8 horsepower was achieved. That peak horsepower gain came at a riding sweet-spot of just over 4500 RPM. It's important to note that from very low revs on, the Ultra Limited showed an increase in estimated horsepower. That makes the gains very usable in real-world riding.
All installation parts are included in the intake kit
Of course, torque is the other leg of the power equation and the RK-3941 does great work there, too. The dyno chart, which you can access on the product page, shows an estimated increase of almost 8.5 foot-pounds. Just like with the horsepower gain, the torque line shows an increase across the RPM range. The result is a very consistent and usable torque supply from the V-twin. The highly engineered velocity stack paired with the high-flow air filter combine to achieve those impressive estimated power gains.
The air intake fits behind the stock Harley intake cover
The design of the RK-3941 intake provides a very clean look for the Harley. It is engineered with internal breathers in its black, powder coated aluminum mounting plate. The K&N air filter rests behind the stock Harley filter cover. That filter is composed of the oiled cotton gauze media that not only boosts air flow, but also provides highly effective engine protection. The intake is slightly wider than the stock unit.
When it is time to wash the filter element, the 99-5000 filter service kit makes the task easy and quick. The reusable filter makes the wasteful and costly cycle of purchasing and disposing of paper elements a thing of the past. Like all K&N products, the RK-3941 is backed by an industry-leading 10-Year/Million Mile Warranty.
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