Motorcycle Filter Fit For Honda CRF450X 2019-2023 CRF450L 2019-2023 CRF450RL 2021-2023 Custom molded to OEM dimension exclusively Fit For Honda CRF450X CRF450L CRF450RL enduro dirt bikes, cross reference OEM part 17213-MKE-A50 for seamless direct replacement without Flame laminated dual-layer open-cell foam structure; thick outer coarse foam blocks large sand mud debris, fine inner foam traps tiny fine dust particles while maintaining airflow Integrated wide soft sealing ring fits tight against airbox housing; prevents unfiltered dirty bypass during rough trail cross-country speed offroad riding Water washable reusable design compatible with standard foam filter oil; durable bonding glue solvent , no layer separation after repeated cycles Optimized low-restriction airflow improves throttle response engine power output; effectively blocks abrasive particles to reduce cylinder piston wear extend engine life