These Airbox Covers prevent water and bike cleaner from entering your intake when cleaning the airbox. Airbox Covers are manufactured from tough, durable ABS plastic. A rubber sealing ring is provided to ensure a perfect, leak-free fit. To use, simply remove your air filter from the airbox and install the Airbox Cover with the provided mounting screw (if required). AIR BOX WASH COVER BETA ENDURO 125RR 13-18 250RR 13-19 300RR 13-19 350RR13-19 390RR 13-19 400RR 13-19 430RR 15-19 480RR 15-19 498RR 13-19 500RR 15-19 525RR 13-19 X-TRAINER 250 18-22 X-TRAINER 300 13-22