Twin Air Foam Air Filter for Yamaha Motorcycle 1979
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Twin Air Foam Air Filter for Yamaha Motorcycle 1979



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 gave riders airflow but failed to protect them.

Twin Air’s breakthrough, combined dual-layer design combines performance and protection.

The fused layers of open-cell foam and fine inner foam trap even the smallest particles.

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

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

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

– two-layer foam (made to specification with cells of equal size and distribution)

– high quality (assembled by hand and checked for perfect fit

Additional information

Weight 100 g

Twin Air

Manufacturer Part Number


To Fit Make


To Fit Model

YZ 400

Intended Use

Replacement Part





Air Filter

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