K&N Hammer Street Metal Intake System - Black Finish - Harley Milwaukee-Eight Touring & Softail
About K&N
K&N pioneered the washable, reusable cotton-gauze air filter and has been building intake products since 1969. On a V-twin, an intake swap is usually step one of the classic uncork — filter, exhaust, then tune.
The K&N Hammer Street Metal Intake System in black finish is engineered to replace your restrictive factory air cleaner with a performance-driven upgrade. This system combines K&N's renowned High-Flow air filter with a custom aluminum assembly, designed to boost horsepower and torque for your Harley-Davidson Milwaukee-Eight Touring or Softail.
Why riders pick this
- Increases horsepower and torque
- Oversized K&N High-Flow air filter
- Integrated velocity stack for smooth airflow
- Built-in breathers replace external OE units
- Black wrinkle finish aluminum cover
- Washable and reusable filter element
Optimizing airflow is one of the most effective ways to improve your V-twin's performance. The Hammer Street Metal Intake System not only provides a significant increase in air volume to your engine but also adds a aggressive custom aesthetic under the tank. The black finish integrates seamlessly with a wide range of engine and chassis color schemes, giving your bike a purposeful, high-performance look.
Engineered for Performance and Style
- Oversized K&N High-Flow air filter element for maximum airflow
- Aluminum backing plate with an integrated velocity stack to smooth air delivery
- Built-in breathers eliminate the need for external OE breather components
- Durable black wrinkle finish aluminum cover for a custom appearance
- Washable and reusable filter element for long-term value
A Foundation for Future Upgrades
Installing the K&N Hammer Street Metal Intake System is a foundational upgrade for any Harley Milwaukee-Eight owner looking to unlock their bike's full potential. For optimal performance gains, pairing this intake with a quality exhaust system and a dyno tune is highly recommended. This combination ensures your engine receives the right fuel mapping to complement the increased air intake, resulting in a more powerful and responsive ride.
Specifications
- Brand: K&N
- Manufacturer Part #: RK-3954B
- UPC: 024844365293
- Finish: Black wrinkle
- Length: 11.75 in
- Width: 9.5 in
- Height: 4.88 in
- Weight: 3.8 lbs
Common questions
Is the air filter element reusable?
Yes, the K&N High-Flow air filter element is washable and can be re-oiled, providing long-term service and value.
Will I need to tune my Harley after installing this intake?
A fuel management tuner is recommended to optimize performance and ensure proper air/fuel mixture after installing this high-flow intake system.
Does this intake replace the entire stock air cleaner assembly?
Yes, this K&N Hammer Street Metal Intake System is a complete replacement for your stock air cleaner, including the manifold and air box.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | K&N |
| TYPE | Air Filters |
| SKU | 7933954B |
| WEIGHT | 3.8 lb |
