Dyno-tested and flow-bench designed, kit will add substantial 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 design does NOT interfere with riders leg. Beautifully chromed and decoratively milled covers available in several designs. Fuel-injected bikes do NOT require Power Commanders 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.