4-string · Neck-Through-Body
Graphite-reinforced through-body maple neck with scarf joint, 12-16 compound radius maple fingerboard, Dual passive medium-output humbucking pickups, two-way toggle switch for pickup coil splitting, 3-band active EQ, blend control and volume control with push/pull selector to bypass or engage active circuit for the 3-band EQ, HiMass™ hardtail bridge
| Construction | Neck-Through-Body |
| Strings | 4 |
| Body | Poplar |
| Neck | Maple |
| Fingerboard | Maple |
| Neck Pickup | Jackson® Medium-Output Humbucking |
| Bridge Pickup | Jackson® Medium-Output Humbucking |
| Controls | Volume (Push/Pull Selector for Active/Passive Options), Blend, 3-Band EQ (Active Only) |
| Bridge | Jackson® HiMass™ |
Artists documented playing the Jackson X Series Spectra Bass SBXM IV: Evan Seinfeld, Rick Savage.