Twin Air Air Filter Kawasaki KFX 50 / 90 Twin Air filters are expertly crafted with a dual-layer open-pore foam construction for optimal filtration and exceptional airflow. These filters feature a sturdy design where a coarse-foam outer shell is flame laminated with a fine-foam inner core, ensuring robustness and functionality in a single piece. Designed to enhance air volume surrounding the filter, Twin Air filters significantly boost airflow into the intake, ultimately delivering more power to your engine. Extensive flow bench tests have demonstrated that Twin Air filters not only increase airflow but also reduce the likelihood of clogging. Features: Coarse open-pore foam catches airborne dirt, grime, and sand Fine open-pore inner foam acts as second filter to trap the smallest particles while ensuring maximum air passage Adhesive withstands repeated cleaning Smaller than stock to increase air space and circulation around filter Note: Image is for reference only. Filter will vary depending on make and model of vehicle.