57-1139 Aircharger Intake Bike

( Brand: K-n Engineering ), ( Manufacturer Part Number: 57-1139 ), ( Part Type: Intake ), ( Make: Harley )

Review K N ENGINEERING Aircharger Intake System Black Motorcycle Bike fits STREET

The 57-1139 Aircharger Intake from Engineering is a high-performance air intake system specifically designed for street bikes. This intake system is engineered to deliver increased power and torque by enhancing the air flow into the engine.

The Aircharger Intake is a bolt-on replacement for the stock air box and filter. It features a large, conical air filter with a high-flow, five-layer filter media. This design allows for a greater air flow rate while maintaining excellent filtration efficiency. The intake tube is constructed from mandrel-bent aluminum, ensuring a smooth, unrestricted air flow path to the engine.

The Aircharger Intake also includes a high-flow K&N air filter, which is easy to clean and reuse. The intake tube is finished with a sleek, black powder coat, and the intake comes with all necessary hardware for installation.

Installing the Aircharger Intake is a straightforward process, and it is designed to fit a wide range of street bikes. The intake system is compatible with many popular makes and models, including Harley-Davidson, Indian, Triumph, and Yamaha.

By increasing the air flow into the engine, the Aircharger Intake helps to improve overall engine performance. It can result in increased horsepower and torque, as well as improved throttle response and acceleration. Additionally, the high-flow air filter can help to improve fuel economy by ensuring that the engine is getting the optimal amount of air for combustion.

In summary, the Engineering 57-1139 Aircharger Intake is a high-performance air intake system designed to deliver increased power and torque to street bikes. It features a large, conical air filter with a high-flow, five-layer filter media, a mandrel-bent aluminum intake tube, and is compatible with a wide range of street bike makes and models. Installing the Aircharger Intake is a straightforward process, and it can help to improve overall engine performance, throttle response, and fuel economy.

Pros and Cons of Buying a 57-1139 Aircharger Intake for Street Bikes

The 57-1139 Aircharger Intake is a popular aftermarket performance part for street bikes. This intake system uses a centrifugal supercharger to increase engine power and torque. In this analysis, we will discuss the advantages and disadvantages of purchasing a 57-1139 Aircharger Intake for a street bike.

1. Increased Power: The primary benefit of installing a 57-1139 Aircharger Intake is the significant increase in power. The supercharger forces more air into the engine, allowing it to burn more fuel efficiently, resulting in increased horsepower and torque.

2. Improved Throttle Response: The Aircharger Intake provides immediate throttle response, allowing riders to access maximum power at any RPM. This can lead to improved acceleration and a more responsive riding experience.

3. Enhanced Sound: The Aircharger Intake produces a unique and distinct sound, which many riders find appealing. The sound is a result of the centrifugal supercharger and can add to the overall riding experience.

4. Wide Compatibility: The 57-1139 Aircharger Intake is compatible with a wide range of street bikes, making it a versatile aftermarket performance part.

1. Cost: The 57-1139 Aircharger Intake is a high-performance aftermarket part, and the cost can be a significant barrier for some riders. The intake system and installation can cost several hundred to over a thousand dollars.

2. Complex Installation: Installing the Aircharger Intake requires a fair amount of mechanical knowledge and experience. The installation process can be time-consuming and may require specialized tools.

3. Reduced Fuel Economy: The increased power and torque come at the cost of reduced fuel economy. Riders can expect to use more fuel with the Aircharger Intake installed.

4. Increased Engine Heat: The Aircharger Intake can generate additional heat due to the increased airflow and power output. Riders may need to take precautions to ensure their engine remains cool, such as using a larger cooling system or adding a cooling fan.

The 57-1139 Aircharger Intake for street bikes offers several advantages, including increased power, improved throttle response, and enhanced sound. However, it also comes with some drawbacks, such as the cost, complex installation, reduced fuel economy, and increased engine heat. Ultimately, the decision to purchase an Aircharger Intake depends on an individual's priorities, budget, and riding style. If you prioritize power and throttle response and have the mechanical knowledge and resources to install it, then the 57-1139 Aircharger Intake could be an excellent investment for your street bike.

If you're considering purchasing a 57-1139 Aircharger Intake for your street bike, I would recommend thoroughly researching the product, its compatibility with your specific bike model, and the installation process. Additionally, consider the cost, your mechanical abilities, and your riding style to determine if the benefits outweigh the drawbacks. If you decide to proceed, ensure that you have the necessary tools and resources to install the intake system correctly.

Details:

Fits Harley-Davidson Touring model's, without Lower Fairings. K N Engineering. Satin Black Performance Air Intake System. K NR High-Flow cotton air filter provides outstanding performance and protection.

K NR AIRCHARGERR Performance Air Intake Systems increase power by eliminating the restrictive stock OE air cleaner and replacing it with a complete performance intake system. Integrated internal velocity stack. Built with a heritage of over 45 years performance, building horsepower and making motorcycles perform to get you moving down the highway. Built-in breathers replace external OE.

Harley Davidson FXLRS Low Riders 114 2020. Cast aluminum high-performance intake tube. Harley Davidson FXLRS Low Riders 114 2021. Sold as: Kit.

K NS AIRCHARGER Intake System will give your motorcycle an aggressive appearance while providing a significant increase in airflow resulting more horsepower and torque delivered to the rear wheels. Any damage claims may be exchanged for the identical item only.

part #: 571139 prices

• $205.57-$209.99

specifications scoofilters:

• for models: Street
• brand: K-n Engineering
• mpn: 57-1139
• part type: Intake
• make: Harley

payments scoofilters:

• credit card: Visa
• other
• wallet: Google-pay

general scoofilters:

• condition: New
• Motorcycle Scooter Parts Accessories > Air Intake Fuel Delivery > Air Filters

returns scoofilters:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

shipping scoofilters:

• cost: $0.00
• class: Economy, Standard, Expedited
• transit: 3-7 Days
• type: Fixed
• service: Economy, Standard, Expedited

seller scoofilters:

• city: Loudon, Tennessee
• # reviews: 638017
• rating: 99.6%

offer scoofilters:

• quantity: 1
• options: Ship-to-home
• sold: 0
• availability: In Stock
• started: April 15, 2026

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