K&N Engineering
K&N Buell Firebolt/Lightning/Ulysses Replacement Air Filter - BU-9003
- SKU:
- KNNBU-9003
- UPC:
- 024844107862
- MPN:
- BU-9003
- Availability:
- Regularly stocked product
Description
Do K&N air filters fit my motorcycle?
K&N motorcycle direct fit air filters are custom engineered to precisely fit your specific motorcycle application; confirm your vehicle's fitment before purchase for guaranteed compatibility.
Are K&N air filters easy to install?
Install these direct fit air filters as a simple drop-in replacement, delivering increased performance with minimal effort for a satisfying DIY upgrade.
K&N motorcycle direct fit air filters offer a custom-engineered, drop-in solution for riders seeking a significant performance boost, scoring a 9 for engine performance. Featuring a high-flow design and low restriction, these air filters are guaranteed to enhance throttle response. Experience superior protection and a noticeable increase in power with confidence in their perfect seal and construction.
Key Features
- high-flow air filters
- custom engineered to fit your specific application
- low restriction and increased performance
- excellent engine protection
- Pleated media provides a large filtration area offering long service intervals
- Multiple layers of woven cotton gauze media offers excellent filtration
Why Choose the KN Motorcycle Direct Fit Air Filters
Delivers maximum airflow for a noticeable boost in throttle response and acceleration.
Achieves a perfect seal, ensuring your engine receives clean air without compromise.
Provides superior engine protection, safeguarding your investment from harmful contaminants.
Transforms your ride with sustained peak performance and extended filter life.
Who Is This For?
Street Performance — 8/10
Low restriction and increased performance claims.
Track / Autocross — 7/10
High-flow filter for performance applications.
Racing Competition — 7/10
High-flow filter for performance applications.
Engine Performance — 9/10
Low restriction and increased performance claims.
Easy DIY Install — 9/10
Direct fit, drop-in installation type.
Daily Driving Comfort — 6/10
Excellent engine protection and long service intervals.
Frequently Asked Questions
What K&N motorcycle air filter is best for my 2008 Buell Lightning CityX XB9SX?
K&N's direct fit air filters are custom engineered for optimal performance and protection in your specific application. This filter achieves a perfect seal, ensuring your engine receives clean air, making it an excellent choice for performance-oriented riders.
Are K&N motorcycle direct fit air filters easy to install?
K&N direct fit air filters are designed for an easy DIY install, utilizing a drop-in installation type. This straightforward process allows you to quickly upgrade your motorcycle's air intake system without specialized tools.
How do K&N motorcycle direct fit air filters improve engine performance?
These high-flow air filters deliver maximum airflow for a noticeable boost in throttle response and acceleration, scoring a 9 for Engine Performance in our usage matrix. This low restriction design directly translates to increased performance for your motorcycle.
What is the recommended usage for K&N motorcycle direct fit air filters?
K&N motorcycle direct fit air filters excel in Street Performance and Engine Performance applications, scoring an 8 and 9 respectively. Their high-flow design and excellent engine protection make them ideal for daily driving and spirited riding.
Important Notices
⚠️ Proposition 65 Warning: This product can expose you to chemicals including lead and/or other substances known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Browse More: Shop All Air Filters - Direct Fit — Air Filters
Additional Information
Clearance Item: |
N |
MPN: |
BU-9003 |
Proposition 65: |
Y |
Case Lot Quantity: |
1 |
Category: |
Air Filters>Air Filters - Direct Fit |
Install Type: |
Drop-In |
Product Level: |
Premium Performance |
Street Performance: |
8/10 |
Track / Autocross: |
7/10 |
Racing Competition: |
7/10 |
Engine Performance: |
9/10 |
Easy DIY Install: |
9/10 |
Daily Driving Comfort: |
6/10 |
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