Are they graphite reinforced?
You could say so! Many builders boast that their graphite reinforcement strips run all the way from the bridge to the head stock. BassLab instruments actually have a layer of graphite throughout the entire instrument. Besides the tonal benefits, like longer sustain, no dead spots, and greater resonance, this layer provides electrical shielding for the electronics, even right up to the edges of the pickups! But keep in mind that the BassLab magic is in the “Tunable Mixed Composite”, not the graphite.