4L VADEV parts are recognized for their quality and demanding development. VADEV, which stands for Old Vehicles DEVeloppement, is the reflection of our philosophy, to bring you the best parts for your R4, and to share our passion for the model! Our VADEV dials and probes will allow you a thorough and quality preparation in order to understand in the best possible way the events which constitute the raid in which you are going to participate.