K&N KNSU9921 Air filterRef : KA00081A / KNSU9921

KNSU9921 Air Filter by K&N

K&N high-performance air filter designed to enhance engine air intake through a multi-layer construction of oiled cotton. Washable and reusable, it reduces replacement frequency and simplifies maintenance while allowing for quick installation without tools. The materials and frame are engineered for durability, providing consistent engine protection.

Design and Materials

• Multi-layer oiled cotton material offering up to 50% greater airflow than a paper filter, which can help increase engine power
• Durable frame and materials designed to withstand the vehicle's lifespan for reliable filtration
• Design derived from racing experience to meet performance needs in demanding driving conditions

Usage and Performance

• High-flow design aimed at improving power, torque, and acceleration for better responsiveness in driving
• Optimised airflow promoting better engine filling for a more responsive engine feel

Practicality and Features

• Washable and reusable filter reducing purchase frequency and environmental impact
• Tool-free installation achievable in under five minutes for quick replacement
• Extended maintenance intervals up to 50,000 miles depending on driving conditions to space out maintenance operations

Safety and Standards

• Laboratory tested to ISO 5011 standards to ensure verified filtration efficiency and engine protection
• Design preventing dirt ingress to limit internal engine wear

Advantages

• OEM Reference SU-9921
• Limited 10-year/1.6 million kilometre warranty for long-term coverage

Compatible with a selection of models including:

• SUZUKI GSX-S 1000 KATANA ABS E5+ 1000 cc (2026)
• SUZUKI GSX-S 1000 GT ABS E5+ 1000 cc (2026)
• SUZUKI GSX-S 1000 ABS E5+ 1000 cc (2026)