The K&N HA-1313 is a drop-in, pre-oiled panel filter with cotton gauze media that replaces the stock paper element in the Honda Grom 125 and MSX125 airbox. Unlike a disposable paper filter, it can be washed, re-oiled, and reused, so you avoid repeat element purchases over the life of the bike. The manufacturer says it is engineered for higher airflow and throttle response, and that it installs without modifications or tuning on the models it lists. Shoppers searching for a washable Grom air filter, a MSX125 high-flow intake upgrade, or a HA-1313 drop-in replacement will find this is the part K&N designed for that airbox.
Fitment deserves a careful check before you order. K&N's own pages describe different year ranges, with some tied to the 2013-2015 stock airbox and others covering 2014-2020 Grom and 2013-2020 MSX125 models, including the 2018-2020 Grom ABS. The manufacturer cross-references the filter to Honda part 17210K26900, so match that number to your original element. The filter is about 289 mm long, 173 mm wide, and 22 mm tall. Installation is rated easy and takes roughly 5 to 10 minutes with a screwdriver. Owners on user forums have relocated the intake air temperature sensor into the filter end cap, so plan for that step if your bike has one.
The manufacturer lists it as a direct cross-reference for Honda part 17210K26900 and says it fits the stock airbox on the models it covers. Because K&N's published year ranges differ, confirm your model year before ordering.
The manufacturer states that it installs without modifications or tuning on the listed Grom and MSX125 models.
The manufacturer specifies about 9 ml of K&N filter oil for re-oiling after cleaning. The manufacturer also offers recharger service kits to restore a washed filter.
The manufacturer rates this as an easy, screwdriver-only job that takes about 5 to 10 minutes. Remove the stock element, seat the K&N filter fully in the airbox, and confirm the sealing surface sits flat before closing the cover. Owners on user forums report that removing the airbox makes it easier to reach the intake air temperature sensor, which some have relocated into the filter end cap. Keep the filter clean and re-oiled, and avoid over-oiling, because excess oil can contaminate nearby sensors.
