Dual action, or two way, truss rods can create tension in both directions. Dual action truss rods can create relief by itself, something that is usually done by string tension. Though not particularly common, some necks can be so stiff that the neck remains too flat or slightly back bowed even under string tension. A dual action truss rod allows you to “create” relief by bowing the neck forward.
Available in the following sizes:
- 420mm for Acoustic Guitar
- 440mm for Electric Guitar
- 580mm for Electric Bass