Dyno-tested and flow-bench designed, kit will add increases to horsepower and torque. Reusable air filter dynamically increases airflow and velocity. Maximizes overall performance and fuel efficiency. Innovative design enhances and accentuates the V-Twin engine. Set back, thin-line does not interfere with rider's leg. Beautifully chromed and decoratively milled covers available in several designs. Fuel-injected bikes do not require Power Commander or other EFI modifications if equipped with stock exhaust. Complete with a Micron Rain Coat. Mounting hardware and easy to follow instructions are included for a do it yourself install.