GYTR Performance High-Flow Air Filter maximizes airflow while maintaining exceptional filtration with a completely washable and reusable foam element. For optimized performance please service with Yamalube Foam Filter Oil, ACC-FOAMF-LT-ER. Two-stage foam construction Welded foam junction Grommets included This accessory is restricted to closed-course competition use. If not the GYTR Hi Performance choose the Original Yamaha Stock Part.