BMW G450X Air Filter Foam Twin AIR

Foam Filter TwinAir

Over 40 years ago, the sandy, gravelly soils of the Netherlands - and the resulting engine failures - proved that foam and paper filters provided airflow to riders but failed to offer protection.

The breakthrough of Twin Air, the combined dual-layer design unites performance and protection.

The fused layers of open-pore foam and fine inner foam capture even the smallest particles.

The new, rounder design increases airflow. This also applies to the minimized seams, made possible by a revolutionary micro-adhesion process: shorter seams = more foam = more flow.

- with flowable, backfire-resistant foam laminated to the inside of the filter

- washable and reusable (40 to 50 times is common)

- dual-layer foam (according to specifications with equally sized and distributed cells)

- high quality (hand-assembled and checked for perfect fit)