Moto Tassinari Delta 3 Reed Valve System. A larger flow potential provides better acceleration and more horsepower throughout the powerband. Crisp throttle response out of the corners. Composite material with rubber overmold reed cages provide longer reed life. 12-petal design with carbon fiber reed petals.Order one reed-petal set per reed block. Some pictures are Generic Manufacture photos, You will receive the proper part number listed. California Customers: WARNING: This product may contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.