K&N Engineering BU-9003 High-Flow Replacement Air Filter for Buell Firebolt and Lightning Motorcycles

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 media provides a large filtration area offering 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

The K&N Engineering BU-9003 High-Flow Air Filter is a washable and reusable replacement filter designed for select Buell Firebolt and Lightning motorcycles. Its oiled cotton gauze media is engineered to increase airflow, helping support improved horsepower, throttle response, torque, and acceleration while providing dependable engine protection.

The BU-9003 features a precision OEM-style fit with application-specific sealing beads and base seals for straightforward installation where applicable. Pleated filter media creates a large filtration area to support extended service intervals, while multiple layers of woven cotton gauze provide effective filtration. The filter arrives pre-oiled and ready to install, and it can be cleaned and reused for long-term value using the appropriate K&N Filter Care Service Kit, including the 99-5000 aerosol kit.

This K&N Engineering motorcycle air filter is made in the USA and backed by a No-Hassle Lifetime Limited Warranty. It fits select 2002–2005 Buell models, including the XB9R Firebolt, XB9S Lightning, XB12R Firebolt, XB12S Lightning, and XB9SX Lightning CityX. Confirm vehicle application before installation. California customers should acknowledge that this product is not CARB approved where required. This product may also contain chemicals known to the State of California to cause cancer or reproductive harm.

What's Included: One K&N Engineering BU-9003 high-flow replacement air filter, pre-oiled and ready for installation.

Features:

• High-Flow Performance: Increases airflow to support improved horsepower, torque, throttle response, and acceleration.
• Washable and Reusable: Can be cleaned, serviced, and reused for extended filter life.
• Premium Filtration Media: Multiple layers of oiled woven cotton gauze provide effective engine protection.
• Precision OEM-Style Fit: Application-specific sealing beads and base seals support a secure, straightforward installation.

Fitments:
2002 Buell XB9R Firebolt Base
2003 Buell XB9R Firebolt Base
2003 Buell XB9S Lightning Base
2004 Buell XB12R Firebolt Base
2004 Buell XB12S Lightning Base
2004 Buell XB9R Firebolt Base
2004 Buell XB9S Lightning Base
2005 Buell Lightning CityX XB9SX Base
2005 Buell XB12R Firebolt Base
2005 Buell XB12S Lightning Base
2005 Buell XB12Scg Lightning Base
2005 Buell XB9R Firebolt Base
2006 Buell Lightning CityX XB9SX Base
2006 Buell XB12R Firebolt Base
2006 Buell XB12S Lightning Base
2006 Buell XB12Scg Lightning Base
2006 Buell XB12X Ulysses Base
2006 Buell XB9R Firebolt Base
2006 Buell XB9SX Lightning Base
2007 Buell Lightning CityX XB9SX Base
2007 Buell XB12R Firebolt Base
2007 Buell XB12S Lightning Base
2007 Buell XB12Scg Lightning Base
2007 Buell XB12Ss Lightning Long Base
2007 Buell XB12STT Lightning Base
2007 Buell XB12X Ulysses Base
2007 Buell XB9R Firebolt Base
2007 Buell XB9SX Lightning Base
2008 Buell XB12R Firebolt Base
2008 Buell XB12S Lightning Base
2008 Buell XB12Scg Lightning Base
2008 Buell XB12Ss Lightning Long Base
2008 Buell XB12Stt Lightning Super Tt Base
2008 Buell XB12X Ulysses Base
2008 Buell XB12Xt Ulysses Base
2008 Buell XB9SX Lightning Base
2009 Buell Lightning CityX XB9SX Base
2009 Buell XB12R Firebolt Base
2009 Buell XB12Scg Lightning Base
2009 Buell XB12Ss Lightning Long Base
2009 Buell XB12X Ulysses Base
2009 Buell XB12XP Ulysses Police Base
2009 Buell XB12Xt Ulysses Base
2009 Buell XB9SX Lightning Base
2010 Buell Lightning CityX XB9SX Base
2010 Buell XB12R Firebolt Base
2010 Buell XB12Scg Lightning Base
2010 Buell XB12Ss Lightning Long Base
2010 Buell XB12X Ulysses Base
2010 Buell XB12XP Ulysses Police Base
2010 Buell XB12Xt Ulysses Base
2010 Buell XB9SX Lightning 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