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.

• Replacement filter for use with Power Flow Kit.
• The Twin Air dual-stage off-road air filter traps even the smallest particles without restricting air flow to offer the best power output without harming the engine.
• With fused layers of patented open-pore foam and fine inner foam the Twin Air dual-stage off-road air filter protects from dust, dirt, and sand.
• The special adhesives used in the construction of the Twin Air dual-stage off-road air filter will withstand repeated cleaning even with harsh solvents.
• Large, flat sealing surface is greaseless.
• Backfire filters include a laminated layer of backfire-retardant foam.