---
product_id: 3232091
title: "K&N RK-3910-1 Filter Kit for Harley Davidson"
brand: "k&n"
price: "$963"
currency: NZD
in_stock: true
reviews_count: 10
category: "K&N"
url: https://www.desertcart.nz/products/3232091-k-and-n-rk-3910-1-filter-kit-for-harley
store_origin: NZ
region: New Zealand
---

# Washable & reusable filter Dyno-tuned velocity stack 10.76 HP gain @ 5206 RPM K&N RK-3910-1 Filter Kit for Harley Davidson

**Brand:** k&n
**Price:** $963
**Availability:** ✅ In Stock

## Summary

> 🏍️ Ride louder, breathe better, and own the road with K&N’s ultimate Harley filter kit!

## Quick Answers

- **What is this?** K&N RK-3910-1 Filter Kit for Harley Davidson by k&n
- **How much does it cost?** $963 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/3232091-k-and-n-rk-3910-1-filter-kit-for-harley)

## 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

- • **Built to Endure:** Powder-coated billet aluminum backplate eliminates external breathers, enhancing durability and style.
- • **Seamless Factory Fit:** Maintains your Harley’s stock air cleaner cover look while delivering superior airflow and filtration.
- • **Power Boost Unleashed:** Experience a precise 10.76 HP horsepower gain that transforms your Harley’s performance on every ride.
- • **Sustainable Performance:** Washable and reusable filter design means long-term savings and eco-friendly maintenance.
- • **Engineered for Precision:** Dyno-tuned velocity stack optimizes airflow for maximum throttle response and smooth acceleration.

## Overview

The K&N RK-3910-1 Filter Kit is a high-performance air intake upgrade designed specifically for Twin Cam Harley-Davidson engines. Featuring a dyno-tuned velocity stack and a washable, reusable high-flow air filter, it delivers an estimated 10.76 horsepower gain at 5206 RPM. Its powder-coated billet aluminum backplate enhances durability while maintaining a factory appearance by fitting under the stock air cleaner cover. Ideal for riders seeking a blend of power, style, and sustainable performance.

## Description

K&N's RK Series was developed to get more horsepower from your Twin Cam Harley-Davidson engine. Built around the legendary K&N High-Flow Air Filter, the this RK Series assembly includes an innovative powder coated billet aluminum backplate that eliminates external breathers and features a built-in, dyno-tuned velocity stack. The result is a significant airflow increase to the engine without sacrificing filtration. This RK Series assembly retains a factory appearance by utilizing the stock air cleaner cover. The RK-3910-1 comes with a larger air filter and longer spacers than the RK-3909-1.

Review: Superb - Excellent product had this on my 2006 Sportster 1200 and just installed one on my 2012 Heritage Classic along with V&H 3 " Slash Down Mufflers and V&H FuelPak. Bike runs, sounds, excellerates better than expected. Installed everything myself. You wo't be disappointed.
Review: Good performance but not manufactured very well. - I just had to order another K&N filter kit. I had the original one just over 2 years (March 2016) and when I was doing maintenance on my bike I noticed that the holes that bolt to the throttle body were cracked and broken loose from the backing plate so I have to replace it. It is a pretty poor design and I am sure K&N could of added a little more material in that area to keep the backing plate from breaking. The second thing is the filter gets stuck to the backing plate and I had to use a gasket scraper between the plate and filter to get it to come loose, this is the second time it stuck since I installed it. The only reason I am purchasing another kit from K&N is the bike was Dynoed with this set up and I didn't want to have to get it done again. I may look at other air filter options in the future.

## Features

- Estimated horsepower gain of 10.76 HP at 5206 RPM
- Dyno-tuned velocity stack
- Washable and reusable
- Excellent air filtration

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00778GLYW |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #3,737,385 in Automotive ( See Top 100 in Automotive ) #608 in Automotive Performance Air Filters #2,097,895 in Automotive Replacement Parts |
| Brand | K&N |
| Customer Reviews | 3.8 3.8 out of 5 stars (59) |
| Date First Available | June 9, 2011 |
| Exterior | Painted |
| Global Trade Identification Number | 00024844301697 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.31 pounds |
| Item model number | RK-3910-1 |
| Manufacturer | K&N |
| Manufacturer Part Number | RK-3910-1 |
| Model | Intake System-Harley Davidson |
| OEM Part Number | RK-3910-1 |
| Product Dimensions | 12 x 10 x 5 inches |
| Safety Rating | Não aplicável |
| Shape | Oval |
| UPC | 953040024034 024844301697 |

## Product Details

- **Brand:** K&N
- **Fit Type:** Vehicle Specific Fit
- **Global Trade Identification Number:** 00024844301697
- **OEM Part Number:** RK-3910-1
- **Product Grade:** Performance Part

## Images

![K&N RK-3910-1 Filter Kit for Harley Davidson - Image 1](https://m.media-amazon.com/images/I/51ViusU8teL.jpg)
![K&N RK-3910-1 Filter Kit for Harley Davidson - Image 2](https://m.media-amazon.com/images/I/71Coqck5I5L.jpg)
![K&N RK-3910-1 Filter Kit for Harley Davidson - Image 3](https://m.media-amazon.com/images/I/81FwlG-erFL.jpg)
![K&N RK-3910-1 Filter Kit for Harley Davidson - Image 4](https://m.media-amazon.com/images/I/81N0CYHcqVL.jpg)
![K&N RK-3910-1 Filter Kit for Harley Davidson - Image 5](https://m.media-amazon.com/images/I/81efUbtW6SL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Superb
*by B***N on April 18, 2014*

Excellent product had this on my 2006 Sportster 1200 and just installed one on my 2012 Heritage Classic along with V&H 3 " Slash Down Mufflers and V&H FuelPak. Bike runs, sounds, excellerates better than expected. Installed everything myself. You wo't be disappointed.

### ⭐⭐⭐ Good performance but not manufactured very well.
*by J***W on July 23, 2018*

I just had to order another K&N filter kit. I had the original one just over 2 years (March 2016) and when I was doing maintenance on my bike I noticed that the holes that bolt to the throttle body were cracked and broken loose from the backing plate so I have to replace it. It is a pretty poor design and I am sure K&N could of added a little more material in that area to keep the backing plate from breaking. The second thing is the filter gets stuck to the backing plate and I had to use a gasket scraper between the plate and filter to get it to come loose, this is the second time it stuck since I installed it. The only reason I am purchasing another kit from K&N is the bike was Dynoed with this set up and I didn't want to have to get it done again. I may look at other air filter options in the future.

### ⭐⭐⭐⭐⭐ Great product!
*by J***D on March 25, 2014*

Used it on my Softail and noticed an immediate difference in torque and overall power. Especially at higher RPMs. Easy to install and step by step installation. Relatively quick and easy way to upgrade your existing engine.

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-22*