Exhaust Valves Rave Style / Arctic Cat Select Model:F/M/X-Fire 800 you will notice a nice

you will notice a nice deep tone a little louder than stock

Only weighs 5 lbs

by eliminating back-pressure

By installing these performance parts

Exhaust Valves Rave Style / Arctic Cat Select Model:F/M/X-Fire 800 you will notice a niceWe have upgraded our exhaust valve technology from a membrane bellow style actuator to a piston style actuator. A much simpler design that uses less components and eliminates bellow failure in big bore and turbocharged applications. Our piston mechanism stays lubricated by the engine's 2 stroke oil system and is actuated by the exhaust pressure from the cylinder. Same design works well with naturally aspirated engines as well. We developed this valve