---
product_id: 59739060
title: "K&N Cold Air Intake Kit: Guaranteed to Increase Horsepower: Fits 2001-2017 HARLEY DAVIDSON (Street Bob, Fat Bob, Boy, Low Rider, Dyna Wide Glide, Switchback, other select models)57-1125"
brand: "k&n"
price: "¥101870"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/59739060-k-and-n-cold-air-intake-kit-guaranteed-to-increase
store_origin: JP
region: Japan
---

# Up to 50% more airflow Easy installation in under an hour Fits 2001-2017 HARLEY DAVIDSON K&N Cold Air Intake Kit: Guaranteed to Increase Horsepower: Fits 2001-2017 HARLEY DAVIDSON (Street Bob, Fat Bob, Boy, Low Rider, Dyna Wide Glide, Switchback, other select models)57-1125

**Brand:** k&n
**Price:** ¥101870
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate Your Ride with K&N Power!

## Quick Answers

- **What is this?** K&N Cold Air Intake Kit: Guaranteed to Increase Horsepower: Fits 2001-2017 HARLEY DAVIDSON (Street Bob, Fat Bob, Boy, Low Rider, Dyna Wide Glide, Switchback, other select models)57-1125 by k&n
- **How much does it cost?** ¥101870 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/59739060-k-and-n-cold-air-intake-kit-guaranteed-to-increase)

## 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

- • **Sound of Power:** Experience a thrilling engine roar that commands attention.
- • **Maintenance-Free:** No cleaning needed for up to 100,000 miles!
- • **Towing Powerhouse:** Enhances acceleration and uphill performance for towing.
- • **Unleash Your Ride:** Guaranteed horsepower boost with dyno-tested performance.
- • **Ultimate Protection:** Defends your engine against harmful contaminants.

## Overview

The K&N Cold Air Intake Kit (Model 57-1125) is engineered to fit 2001-2017 HARLEY DAVIDSON models, providing a guaranteed increase in horsepower and improved engine sound. With a 10-Year/Million Mile Limited Warranty, this high-quality, American-made product enhances performance while ensuring world-class engine protection. Installation is a breeze, taking less than an hour with basic tools, and it requires no ECU tune. Experience the difference with a dyno-tested airflow increase of up to 50%.

## Description

K&N Cold Air Intake Kit: Guaranteed to Increase Horsepower: Fits 2001-2017 HARLEY DAVIDSON (Street Bob, Fat Bob, Boy, Low Rider, Dyna Wide Glide, Switchback, other select models)57-1125

## Features

- ULTIMATE LONGEVITY: 10-Year/Million Mile Limited Warranty protects for the life of your vehicle.
- GUARANTEED INCREASE IN HORSEPOWER: Dyno-tested with up to 50% more airflow than restrictive factory box air filter and intake tube
- BETTER TOWING: Improves acceleration and uphill performance when towing by improving throttle response.
- IMPROVED ENGINE SOUND: Hear the power under the hood.
- WORLD CLASS PROTECTION: Pushing the limits of engine protection by protecting your engine from harmful contaminants
- EASY MAINTENANCE: No filter cleaning required for up to 100,000 miles
- EASY TO INSTALL: Bolt-on power in less than an hour with basic hand tools. K&N air intake systems are one of the easiest ways to guarantee an increase in horsepower.
- DYNO TESTED: Dyno-tested for a guaranteed increase in horsepower and acceleration with no ECU tune required
- HIGH QUALITY: Made in America.
- RACETRACK APPROVED: The Official Air Filter of NASCAR. Trusted on the racetrack—made for your vehicle.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | K&N Engineering |
| Brand | K&N |
| Model | 57-1125 |
| Item Weight | 2.89 pounds |
| Product Dimensions | 11.73 x 9.49 x 4.88 inches |
| Country of Origin | USA |
| Item model number | 57-1125 |
| Is Discontinued By Manufacturer | No |
| Exterior | Machined |
| Manufacturer Part Number | 57-1125 |
| OEM Part Number | 57-1125 |

## Images

![K&N Cold Air Intake Kit: Guaranteed to Increase Horsepower: Fits 2001-2017 HARLEY DAVIDSON (Street Bob, Fat Bob, Boy, Low Rider, Dyna Wide Glide, Switchback, other select models)57-1125 - Image 1](https://m.media-amazon.com/images/I/517nJdYxSwL.jpg)
![K&N Cold Air Intake Kit: Guaranteed to Increase Horsepower: Fits 2001-2017 HARLEY DAVIDSON (Street Bob, Fat Bob, Boy, Low Rider, Dyna Wide Glide, Switchback, other select models)57-1125 - Image 2](https://m.media-amazon.com/images/I/71KIxWlLaPL.jpg)
![K&N Cold Air Intake Kit: Guaranteed to Increase Horsepower: Fits 2001-2017 HARLEY DAVIDSON (Street Bob, Fat Bob, Boy, Low Rider, Dyna Wide Glide, Switchback, other select models)57-1125 - Image 3](https://m.media-amazon.com/images/I/71EpJuCR+KL.jpg)
![K&N Cold Air Intake Kit: Guaranteed to Increase Horsepower: Fits 2001-2017 HARLEY DAVIDSON (Street Bob, Fat Bob, Boy, Low Rider, Dyna Wide Glide, Switchback, other select models)57-1125 - Image 4](https://m.media-amazon.com/images/I/71l3naHo+cL.jpg)
![K&N Cold Air Intake Kit: Guaranteed to Increase Horsepower: Fits 2001-2017 HARLEY DAVIDSON (Street Bob, Fat Bob, Boy, Low Rider, Dyna Wide Glide, Switchback, other select models)57-1125 - Image 5](https://m.media-amazon.com/images/I/91ocH999eiL.jpg)

## Frequently Bought Together

- K&N Cold Air Intake Kit: Guaranteed to Increase Horsepower: Fits 2001-2017 HARLEY DAVIDSON (Street Bob, Fat Bob, Boy, Low Rider, Dyna Wide Glide, Switchback, other select models)57-1125
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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-10*