Moto Tassinari V-Force 3 Reed Valve System V3132R-873F-2The latest advancement in reed technology Snap together cage uses symmetrical reed petals, eliminating the need for different inner and outer replacement petals Reed tip shape accelarates air mixture, ensuring increased airflow for increased horsepower Innovatinve design completely eliminates need for screws When ordering replacement reeds have the same number of petals as the set you are replacing