K&N Replacement Air Filter DUC ST2 / ST3 / ST4 (97-'07) Model_Richa D3O Replace your old

Replace your old

it will display the voltage of your battery

- Improved protection through finer filtration levels

the V2V antenna screws into the port on the back

Aerodynamic build reduces drag and boosts performance

K&N Replacement Air Filter DUC ST2 / ST3 / ST4 (97-'07) Model_Richa D3O Replace your oldK&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