BMC Air Filters - Aprilia RS4 50/125 High Performance Air Filter Option:Standard (FM736/01) Shut off position will prevent

Shut off position will prevent any leak

furthermore plastic does not create vibrations and do not save deformations

Stretch mesh hydration pocket

with the option to upgrade by installing our SEESOFT™ CE-level 2 back protector insert

Replacement spring -25mm for original shock absorber

BMC Air Filters - Aprilia RS4 50/125 High Performance Air Filter Option:Standard (FM736/01) Shut off position will preventThis High Performance air filter is made from premium material that allow increased air flow and filtration efficiency, blocking containment as small as 7 microns (compared with 10 microns in most other filters). BMC air filters are produced using a "Full Moulding" system. This prolongs the life and durability of the filter. The rubber used in BMC air filtering systems has a long life with optimum adhesion characteristics to all shapes of airboxes.