BMC Air Filters - Aprilia RS4 50/125 High Performance Air Filter Option:Standard (FM736/01) including a large SuperFabric® insert

including a large SuperFabric® insert inside the palm

Polished throttle section for smooth acceleration

Shut off position will prevent any leak

Replacement spring -25mm for original shock absorber

For example: wind flow over motorcycle clothing and turbulence caused by a truck or van in front

BMC Air Filters - Aprilia RS4 50/125 High Performance Air Filter Option:Standard (FM736/01) including a large SuperFabric® insertThis 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.