Yamaha MT-09 Series (21-23) DNA Air Filter Stage 2 P-Y9N21-S2 - DNA Increased Air Flow +54.78%, DNA Filtering Efficiency 99-99% - YMA-MT0921 - DNA Filters - Product Details
Motorcycle Air Filter for YAMAHA MT/FZ/FJ 09 - AliExpress
Amazon.com: DNA Stage 2 High Performance Air Filter Compatible for Yamaha MT -09 SP (21-23) PN: P-Y9N21-S2 : Automotive