Nautilus Nitro Plus Lower Back

An excellent choice in lower body strength equipment, the Nautilus Nitro® Plus Lower Back is the only full range, lumbar-isolated machine that emulates the function of rotation around multiple vertebrae. 

  • Four-bar linkage provides a moving axis of rotation that simulates the body's moving axis of rotation, increasing user safety by eliminating sheer forces on the spine 
  • Large, flat back pad spreads out over larger area and pivots for user comfort
  • Contoured lower back pad allows full range extension 
  • Adjustable foot platform to position knees above hip joint, eliminating pelvic  thrust and maintaining axis alignment for a successful workout


You really have to experience the Nitro® Plus advantage to understand just how radical a difference there is between their Lower Back strength training machine and other similar fitness equipment. During any exercise, an individual’s strength varies at different points. Other weight machines don’t even attempt to address this strength curve — instead, the weight remains constant from beginning to end. For the user, this can limit muscle recruitment and overall performance.


This unique technology is cutting edge. Driven by their trademark four-bar linkage system, cam design, or a combination of both, this dynamically matches the body’s potential increases and decreases in strength. 


With Nitro® Plus Lower Back machines, clients get immediate, smooth resistance and proper muscle loading through the complete range of motion. The converging press arms on this line of fitness equipment provides the correct way to work out, leading to unprecedented results. The alternative strength training machine designs force the user to follow an incorrect path or motion. Additionally, the independent converging press arms also ensure greater joint rotation for increased muscle contraction.


  • 12 years: Frames, welded moving parts and weight stacks.
  • 3 years: For any moving parts and parts under normal use and service, not already disclosed by this warranty.
  • 1 year: Labor warranty.
  • 6 months: Pads, grips and tethered weight stack pins.
Unique cutting edge technology gives your members amazing workout results with the Lower Back machine from the Nitro Plus line of Nautilus fitness equipment.
Nautilus Nitro Plus Lower Back Specifications