VFORCE 3 REED VALVE 3PK JETSKI JS900 95-06 1100ZXI 1100STX DI 96-03 ULTRA 130 01-04 ULTRA 150 99-05The unique design of the VForce reed valve system features double the reed tip surface over a conventional reed valve design. This has two major benefits: 1) The reed petals only travel half the distance as a conventional reed valve design to get the same airflow. 2) Because the reed petals only need to travel half the distance of that on a conventional reed valve design, there is a greater chance of them being fully opened as well as a better chance