K&N RK-3933 Street Metal Series High-Flow Air Intake System

Upgrade your Harley-Davidson with the K&N RK-3933 Street Metal Series High-Flow Air Intake System. This system not only enhances the look of your bike but also significantly boosts airflow, leading to an impressive increase in horsepower and torque. Designed specifically for various Harley models, this intake system replaces the stock air cleaner with a high-flow alternative that delivers performance you can feel.

Key Features:

• Air Filter Color: Red
• Air Filter Height: 2.125 in (54 mm)
• Material: Cotton Gauze
• Washable: Yes
• CARB EO Number: D-269-55/59
• Estimated Horsepower Gain: 7 HP @ 5204 RPM
• Overall Height: 2.375 in (60 mm)
• Weight: 4.2 lb (1.9 kg)
• Street Legal: Yes, in all US states
• Warranty: No-Hassle Lifetime Limited

Installation Made Easy

Included with the RK-3933 are all necessary mounting hardware and a durable mounting gasket to absorb vibration, ensuring a smooth installation process. For detailed installation instructions, click here.

Fitment

The K&N RK-3933 is compatible with a range of Harley-Davidson models, including:

• Harley Davidson FXDBI Street Bob 2006
• Harley Davidson FLHX Street Glide 2007
• Harley Davidson FLHRCI Road King Classic 1999-2006
• Harley Davidson FLSTF Fat Boy 2007-2015
• Harley Davidson FXDF Fat Bob 2008-2017

Customer Feedback

Many riders have praised the RK-3933 for its noticeable performance improvement and stylish design. Users appreciate the ease of installation and the enhanced throttle response, making their rides more enjoyable. Whether you're cruising down the highway or navigating city streets, this air intake system adds a touch of elegance and performance to your Harley.

Specifications

• Inlet Diameter: 2.281 in (58 mm)
• Mass Air Flow Sensor Adapter: Not included
• Replacement Filter: HD-0800