--- product_id: 62993139 title: "K&N Cold Air Intake System: Powersports High-Flow Air Filter, RK-3952" brand: "k&n" price: "€ 490.15" currency: EUR in_stock: true reviews_count: 13 category: "K&N" url: https://www.desertcart.be/products/62993139-k-and-n-cold-air-intake-system-powersports-high-flow store_origin: BE region: Belgium --- # Guaranteed horsepower boost Washable & reusable filter up to 100K miles Vehicle-specific fit for Harley Davidson K&N Cold Air Intake System: Powersports High-Flow Air Filter, RK-3952 **Brand:** k&n **Price:** € 490.15 **Availability:** ✅ In Stock ## Summary > ⚡ Ride louder, faster, smarter — Own the road with K&N power! ## Quick Answers - **What is this?** K&N Cold Air Intake System: Powersports High-Flow Air Filter, RK-3952 by k&n - **How much does it cost?** € 490.15 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/62993139-k-and-n-cold-air-intake-system-powersports-high-flow) ## Best For - k&n enthusiasts ## Why This Product - Trusted k&n brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Unleash Raw Power:** Dyno-tested to guarantee increased horsepower and throttle response—feel the difference every ride. - • **Effortless Upgrade:** Simple 60-minute installation with no factory warranty void—upgrade your ride without the hassle. - • **Tailored for Harley:** Precision-engineered for 2008-2017 Harley Davidson models to ensure seamless fit and peak performance. - • **Eco-Smart Filtration:** High-flow cotton air filter washable and reusable up to 100,000 miles—save money and reduce waste. - • **Enduring Performance:** Built with premium materials and a custom heat shield for lasting durability and optimized airflow. ## Overview The K&N Cold Air Intake System RK-3952 is a premium, vehicle-specific upgrade designed for select 2008-2017 Harley Davidson motorcycles. Featuring a dyno-tested design, it guarantees increased horsepower and enhanced throttle response. Constructed with durable materials and a custom heat shield, it optimizes airflow while the washable, reusable high-flow cotton air filter lasts up to 100,000 miles. Easy to install in about an hour, this system improves engine sound and performance without voiding factory warranties. ## Description K&N is the inventor of the Air Intake System and has over 50 years of experience in the performance filtration industry. Proudly designed and manufactured in the USA, this premium cold air intake system is specifically designed for your vehicle and is dyno tested to provide a guaranteed increase in horsepower. It features a high flow intake tube, custom heat shield, and oversized K&N Washable High-Flow Cotton Air Filter for ultimate airflow. This Intake system replaces the restrictive OEM air box to provide an improved driving experience for daily driving or towing. It installs easily in about 60 minutes and is backed by a No-Hassle Lifetime Limited Warranty and will not void your factory warranty.Compatible Vehicles:2016-2017 HARLEY DAVIDSON FLS Softail Slim2016-2017 HARLEY DAVIDSON FLSS Softail Slim S2016-2017 HARLEY DAVIDSON FLSTC Heritage Softail Classic2016-2017 HARLEY DAVIDSON FLSTF Fat Boy2016-2017 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo2016-2017 HARLEY DAVIDSON FLSTFBS Fat Boy S2016-2017 HARLEY DAVIDSON FLSTN Softail Deluxe2016-2017 HARLEY DAVIDSON FXSB Breakout2008-2016 HARLEY DAVIDSON FLHR Road King2015-2016 HARLEY DAVIDSON FLHTK Ultra Limited2015-2016 HARLEY DAVIDSON FLHTKL Ultra Limited Low2008-2016 HARLEY DAVIDSON FLHX Street Glide2014-2016 HARLEY DAVIDSON FLHXS Street Glide Special2015-2016 HARLEY DAVIDSON FLRT Freewheeler2015-2016 HARLEY DAVIDSON FLTRX Road Glide2015-2016 HARLEY DAVIDSON FLTRXS Road Glide Special2011-2014 HARLEY DAVIDSON FLHTK Electra Glide Ultra Limited2010-2014 HARLEY DAVIDSON FLTRX Road Glide Custom2008-2013 HARLEY DAVIDSON FLHRC Road King Classic2008-2013 HARLEY DAVIDSON FLHTC Electra Glide Classic2008-2013 HARLEY DAVIDSON FLHTCU Ultra Classic Electra Glide2009-2013 HARLEY DAVIDSON FLHTCUTG Tri Glide Ultra Classic2011-2013 HARLEY DAVIDSON FLTRU Road Glide Ultra2009-2012 HARLEY DAVIDSON FLHP Road King Police2012 HARLEY DAVIDSON FLHTCU Electra Glide Ultra Classic2009-2012 HARLEY DAVIDSON FLHTP Electra Glide Police2010-2011 HARLEY DAVIDSON FLHXXX Street Glide Trike2008-2011 HARLEY DAVIDSON FLTR Road Glide2008-2010 HARLEY DAVIDSON FLHT Electra Glide Standard2010 HARLEY DAVIDSON FLHTCUSE5 CVO Ultra Classic Electra Glide2008 HARLEY DAVIDSON FLHRSE4 Screamin Eagle Road King Review: Worth Every Dime - I replaced an Arlene Ness Big Sucker with this K&N and it was worth every dime. Way more air flow and a significantly noticeable increase in power. Instructions were a little vague but it wasn't that hard to figure out. Looks good and it gives the desired effect. Review: Great breather for my Harley Roadglide - Ive tried a few different breathers on my 2015 Harley Road glide and when this was on sale i had to try it. Install was straight forward with clear included instructions. Parts are quality made and thought went into engineering this to fit perfect. Fit touring Harleys really well. This is my favorite to date. Included pictures. Kit comes with a K&N decal and a emission decal/ tag if needed for your state Inspection. Highly recommended. ## Features - Increased Horsepower: Guaranteed to increase horsepower, helping unlock greater performance from your engine. - Enhanced Driving Experience: Improves throttle response and improved engine sound. - Premium Construction: Built with premium intake materials and a durable, high-quality finish designed for lasting performance. - Washable & Reusable Air Filter: Includes a High-Flow Air Filter that can go up to 100,000 miles before cleaning under normal highway driving conditions. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07BHB1W8M | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #265,454 in Automotive ( See Top 100 in Automotive ) #1,010 in Powersports Air Filters | | Brand | K&N | | Brand Name | K&N | | Customer Reviews | 4.7 out of 5 stars 229 Reviews | | Fit Type | Vehicle Specific Fit | | Global Trade Identification Number | 00024844367013, 02484436701300 | | Included Components | 1 Air Filter | | Item Dimensions L x W x H | 12"L x 9.5"W x 3.75"H | | Item Highlight | Fits Select 2008-2017 HARLEY DAVIDSON: FLSTF Fat Boy/FLSS Softail Slim/FXSB Breakout (See Product Description) | | Item Type Name | Intake System (Harley Davidson) | | Item Weight | 3.9 pounds | | Manufacturer | K&N Engineering | | Manufacturer Part Number | RK-3952 | | Manufacturer Warranty Description | 3 Months | | Model Number | RK-3952 | | Number of Items | 1 | | OEM Equivalent Part Number | 77-2557KP | | OEM Part Number | 77-2557KP | | Product Dimensions | 12"L x 9.5"W x 3.75"H | | Product Grade | Performance Part | | Shape | Oval | | UPC | 024844367013 | | Unit Count | 1 Count | ## Product Details - **Brand:** K&N - **Fit Type:** Vehicle Specific Fit - **OEM Part Number:** 77-2557KP - **Product Dimensions:** 12"L x 9.5"W x 3.75"H - **Product Grade:** Performance Part ## Images ![K&N Cold Air Intake System: Powersports High-Flow Air Filter, RK-3952 - Image 1](https://m.media-amazon.com/images/I/71smhGstvcL.jpg) ![K&N Cold Air Intake System: Powersports High-Flow Air Filter, RK-3952 - Image 2](https://m.media-amazon.com/images/I/71eI0k4gpOL.jpg) ![K&N Cold Air Intake System: Powersports High-Flow Air Filter, RK-3952 - Image 3](https://m.media-amazon.com/images/I/81G0DHWI0LL.jpg) ![K&N Cold Air Intake System: Powersports High-Flow Air Filter, RK-3952 - Image 4](https://m.media-amazon.com/images/I/81FDetXaRZL.jpg) ![K&N Cold Air Intake System: Powersports High-Flow Air Filter, RK-3952 - Image 5](https://m.media-amazon.com/images/I/819x-gqDtnL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Worth Every Dime *by H***R on July 12, 2025* I replaced an Arlene Ness Big Sucker with this K&N and it was worth every dime. Way more air flow and a significantly noticeable increase in power. Instructions were a little vague but it wasn't that hard to figure out. Looks good and it gives the desired effect. ### ⭐⭐⭐⭐⭐ Great breather for my Harley Roadglide *by P***S on June 12, 2021* Ive tried a few different breathers on my 2015 Harley Road glide and when this was on sale i had to try it. Install was straight forward with clear included instructions. Parts are quality made and thought went into engineering this to fit perfect. Fit touring Harleys really well. This is my favorite to date. Included pictures. Kit comes with a K&N decal and a emission decal/ tag if needed for your state Inspection. Highly recommended. ### ⭐⭐⭐⭐⭐ Feels solid *by G***S on September 24, 2025* Looks good, feels solid, half the price of others, need to get it installed and bike tuned but excited for the future ## Frequently Bought Together - K&N Cold Air Intake System: High-Flow Air Filter, Increase Performance & Acceleration: Compatible with 2008-2017 Harley Davidson: (See Product Description for Select Models), RK-3952 - FILTERWEARS Pre-Filter K425K For Harley Davidson Ventilator Filter K&N Air Cleaner RK-3952 RK-3956 & Arlen Ness 600-099 - M Maintenanse Air Cleaner Filter Waterproof Rain Socker Protective Cover Fit For Harley Touring Flhr Flhx Dyna Softail 114 Road King --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.be/products/62993139-k-and-n-cold-air-intake-system-powersports-high-flow](https://www.desertcart.be/products/62993139-k-and-n-cold-air-intake-system-powersports-high-flow) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-09-30*