Nautilus Nitro Plus Leg Extension

An excellent choice in lower body strength equipment, the Nautilus Nitro® Plus Leg Extension positions the body to allow maximum range knee extension while maintaining axis alignment..

  • Reclined seat back angle prevents hamstrings from interfering with full range quadriceps contraction
  • Quick-set leg pad for proper positioning of all users
  • Heavy padded movement arm roller for user comfort 
  • Improved cam profile allows full contraction in end position


You really have to experience the Nitro® Plus advantage to understand just how radical a difference there is between their Leg Extension 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 Leg Extension 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 provide 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.
A better workout with increased results is what your members will find with the Nitro Plus Leg Extension machine among the fitness equipment on your workout floor.
Nautilus Nitro Plus Leg Extension Specifications