you wont have any performance increase with a high airflow washable filter + you need to clean them pretty often because of how the air intake works on the 9t, the snorkel is in full airflow and sucks in dust and flies etc way more than on other bikes that have a more hidden air intake. after 5000kms my k&n was so dirty, unbelievable. just go with the oem paper filter and youre good.