K&N Replacement Air Filter DUC ST2 / ST3 / ST4 (97-'07) Model_Richa D3O making them last longer

making them last longer

Aerodynamic build reduces drag and boosts performance

Great durability

- Improved protection through finer filtration levels

0 Square Bar Pad Red/Black Protaper

K&N Replacement Air Filter DUC ST2 / ST3 / ST4 (97-'07) Model_Richa D3O making them last longerK&N's high flow air filters are available as a replacement for your stock motorcycle air filter element. They are custom engineered to fit your specific application and are designed to provide low restriction and increased performance, while providing excellent engine protection for your motorcycle. Features: Designed to provide increased horsepower and torque. Pleated media provides a large filtration area offering long service intervals. Multiple