The Cycra Powerflow Intake Shrouds are the next performance leap in technology for the Yamaha YZ450. These intake shrouds improve the airflow to the airbox by a whooping 40%. This eliminates the throttle lag off the bottom & allows the motor to run freer. This is done by increasing the volume & using our patented venturi effect scoops that pump air into the airbox. The shrouds have gone through extensive testing with the Factory Yamaha Race Team. From the racers input we have slimmed & simplified the shrouds to a clean one piece design instead of the complex two piece unit. The slimmer shrouds give the riders enhanced feel of the bike with a smooth outer shell. The simpler shrouds improve the ability to maintain the airbox with fewer fasteners & pieces while saving weight. Even with all these updates, most aftermarket graphics will fit the shrouds with little or no modification. The Smooth surface makes decals easier to apply & resists pealing. The patented Cycra Powerflow Te...