AIR FILTER FEATURES:| Super Sealed Standard Dual Layer Foam Air Filters||DT-1 Standard Air Filters are constructed from high quality 15mm Dual Layer Foam||Designed to perfectly fit the air box and filter cage for best performance|| Fits:| YAMAHA YZ 450 F 2023||The DT-1 RACING EUROPE brand has been producing air filters for over 30 years and is the perfect choice for both professionals and amateurs.| Premium foam technology ensures maximum airflow while maintaining essential engine protection. | It is the cleanest and best seal on the market.| All DT-1 RACING EUROPE air filters are hand-made in Belgium and the USA from the highest quality combined 2-layer and 3-layer foams. | DT-1 RACING EUROPE air filters are available in a standard version or soaked in the highest quality fire-resistant and biodegradable oil. |