The NIBBI RACING Off-Road Air Filter is made of polyurethane foam with multiple conical shapes cut into its surface to maximize the external surface area, which is double the external surface area of a standard filter. A larger area to capture dust, sand and dirt ensures optimal airflow is maintained, thus maximizing engine performance and reliability. Tool Compatibility: KTM/HUSQVARNA/GASGAS EXC/F TE/FE EC/ECF 2023-2024