K&N Engineering YA-1004 High-Flow Replacement Air Filter for 2004-2006 Yamaha YZF-R1

The K&N High-Flow Air Filter for Motorcycles is engineered to increase airflow for improved horsepower, throttle response, and acceleration while providing increased engine protection. Built with premium oiled cotton gauze, this washable and reusable air filter is designed for long-lasting performance, a precision OEM-style fit, and durable construction to keep your motorcycle performing ride after ride. The K&N High-Flow Air Filter for Motorcycles is engineered to increase airflow for improved horsepower, throttle response, and acceleration while providing increased engine protection. Associated products: 99-5000 Filter Care Service Kit Aerosol

• PRECISION OEM-STYLE FIT: Made with application specific seamless sealing beads and custom seals for easy installation (Where Applicable).
• Pleated cotton media provides a large filtration area offering low restriction, high-capacity and long service intervals
• Multiple layers of woven cotton gauze media offers excellent filtration
• Designed to provide increased horsepower and torque
• Washable & reusable, pre-oiled and ready to ride
• Application specific base seal and sealing bead
• No-Hassle Lifetime Limited Warranty
• Made in the USA for over 40 years

Upgrade your motorcycle's intake performance with the K&N Engineering YA-1004 High-Flow Air Filter. Designed as a direct replacement for the factory air filter, it uses premium oiled cotton gauze media to promote increased airflow while helping protect the engine from dirt and debris. The precision OEM-style fit supports straightforward installation and reliable sealing for application-specific motorcycle intake systems.

The K&N Engineering YA-1004 is washable, reusable, pre-oiled, and ready to ride, making it a durable choice for riders who want long service intervals and reduced filter replacement frequency. Its pleated cotton media provides a large filtration area with low restriction and high capacity, while multiple layers of woven cotton gauze help deliver effective filtration. The filter is designed to support improved horsepower, torque, throttle response, and acceleration without requiring modifications to the motorcycle.

This replacement air filter fits the 2004, 2005, and 2006 Yamaha YZF-R1, including the 2006 Yamaha YZF-R1 LE. It features an application-specific base seal and sealing bead where applicable, along with durable construction backed by K&N's No-Hassle Lifetime Limited Warranty. For cleaning and re-oiling, use the associated K&N 99-5000 Filter Care Service Kit Aerosol. This product may require acknowledgment of applicable emissions-related requirements before installation.

Key Product Specifications and Technical Data

• Brand: K&N Engineering
• Part Number: YA-1004
• Product Type: High-flow replacement motorcycle air filter
• Filter Media: Premium oiled cotton gauze
• Serviceability: Washable and reusable
• Fitment Type: OEM-style direct replacement
• Warranty: No-Hassle Lifetime Limited Warranty
• Country of Manufacture: Made in the USA

What's Included

• One K&N Engineering YA-1004 replacement air filter
• Pre-oiled filter media, ready for installation

Features:

• Increased Airflow: Promotes improved airflow to support horsepower, torque, throttle response, and acceleration.
• Washable and Reusable: Can be cleaned and re-oiled for long-lasting service and reduced replacement frequency.
• Premium Cotton Gauze Media: Multiple layers of woven cotton gauze provide effective filtration with low restriction.
• Precision OEM-Style Fit: Application-specific seals and sealing beads provide reliable fitment and straightforward installation where applicable.

Fitments:
2004 Yamaha YZF-R1 Base
2005 Yamaha YZF-R1 Base
2006 Yamaha YZF-R1 Base
2006 Yamaha YZF-R1 LE Base

Air Freight Prohibited: false
Not Carb Approved: false
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: powersports
Epa: N/A
Regular Stock: t
Units Per Sku: 1