![Twin Air KLX 110 and DRZ 110 Air Filter](http://www.bulletproofcycles.com/cdn/shop/products/5986-572a852282e19_large.jpg?v=1554164107)
Twin Air KLX 110 and DRZ 110 Air Filter
This is where it all began. Over 40 years ago, the sandy, gritty soil of The Netherlands – and the resulting engine failures – proved that single-foam and paper filters gave riders air flow, but failed at protection. Twin Air’s breakthrough, fused-dual-layer design (now widely copied) combined performance and protection. The fused layers of open-pore foam and fine 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.