This is where it all began. Over 40 years ago, the sandy, gritty soil of The Netherlands – and the resulting engine failures – proved that singlefoam and paper fi lters gave riders air fl ow, but failed at protection. TwinAir’s breakthrough, fused-dual-layer design (now widely copied) combined performance and protection. The fused layers of open-pore foam and fi ne inner foam trap even the smallest particles. The new, rounder design boosts airflow. So do the minimized seams made possible by a revolutionary micro-gluing process:
Shorter seams = more foam = more flow.

• WASHABLE / REUSABLE (reusing a TwinAir filter 40-50 times is common)
• DUAL-LAYER FOAM (made to our specifications, with cells that are evenly sized and distributed)
• GREASELESS SEALING RING
• HIGH QUALITY (assembled by hand and inspected for a perfect fit)
• PACKAGED IN A RESEALABLE BAG