Exhaust Valves Rave Style / Arctic Cat Select Model:F/M/X-Fire 800 our dual-chamber "Double Barrel" design

our dual-chamber "Double Barrel" design allows you to thread adjusting screws into independent ports

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

Performance Features:

Only weighs 5 lbs

300 chp with ECU tune

Exhaust Valves Rave Style / Arctic Cat Select Model:F/M/X-Fire 800 our dual-chamber "Double Barrel" designWe 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