Twin Air filters are designed to increase airflow while ensuring the highest level of protection from dirt/dust. Design, high quality materials and superior construction deliver unbeatable performance and protection. For Sherco 250 SC-R (2019-2024), 250 SE R (2012-2024), 250 SEF-R, 250 SEF-R Factory (2014-2024), 250 SEF-R Six Days (2018-2024), 300 SC-R (2019-2024), 300 SEF-R (2014-2024), 300 SEF-R Factory (2014-2024), 300 SEF-R 6 Days (2018-2024), 450 SC-R (2019-2024), 450 SEF-R (2015-2024), 450 SEF-R Factory (2016-2024), 450 SEF-R Six Days (2016-2024), 500 SEF Factory (2018-2024).