UNI Filter 2-Stage Performance Air Filter for 1987-99 Polaris Trailboss 250 - NU-8501ST feed-mpn-213261 50mm Piston Size Added Cylinder

50mm Piston Size Added Cylinder Stroke Volume 55

1999 Ducati M750 Monster

Fitments 1978 Honda ATC90

2004 Yamaha Zuma 50

UNI Filter 2-Stage Performance Air Filter for 1987-99 Polaris Trailboss 250 - NU-8501ST feed-mpn-213261 50mm Piston Size Added CylinderUni Filter Dual Stage Foam Air Filter Traps dirt and dust in 2 layers of foam The large pore, pre filter captures the bigger particles The small pore, inner filter prevents any engine wrecking grit from reaching the cylinder Used by Kawasaki, Yamaha and Suzuki offroad teams For over 50 years, Uni Filter Dirt Bike Foam Air Filters have been unsurpassed in both engine protection and overall performance. And their unique two stage design produces more