Fitted Spring: 21103-31

1998 to Current KTM 65 SX and KTM 65 SX-S (Rear Sprocket)

4-way stretch fabric with engineered airflow zones for all-day riding comfort

OEM Part #: 17210MFJD00

Made of A7009-T6 aluminum CNC machined

DNA Air Filters - Air Filter for Ducati MULTISTRADA 620/1000 /113 Options:Air Filter Fitted Spring: 21103-31This filter features DNA's advanced FCd (Full Contour design). Installation of the filter is very easy, simply follow the information that can be found in the Ducati workshop manual. The filtering efficiency is extremely high at 98 99% filtering efficiency, with 4 layers of DNA Cotton. This DNA filter is designed as a High flow filter for road use and off road use.