Pre-owned Hammer Strength Ground Base Jammer

$2,999.00  $1,599.00
Save: $1,400.00


Hammer Strength’s Ground Base technology offers the most advanced feet-on-the-ground positioning whether its during traditional or explosive sport specific training. Simulate real-life movements of the playing field by training in the same planes of motion. 

Patented Iso-Lateral Movements allow users to train in converging and diverging movements with both limbs together, independently or alternating. The counterbalanced system allows for very light starting weights that are perfect for rehabilitation, aging adults and beginners. The advanced movement works on a controlled path of motion so there is no learning curve to experience a more advanced movement. 

Originally designed for athletes who demand high performance training equipment, Hammer products benefit all users, from professional athletes to everyday champions.

The Hammer Strength Ground Base Jammer passed a rigorous inspection by our own, Fitness Exchange Service Team. Sold As-Is. Does not include weight plates.

 Only available for purchase in-store or by phone.


Certified PreOwned

Pre-owned Hammer Strength Ground Base Jammer


  • Frame Construction - U.S. made mechanical quality steel purchased in mill run quantities to assure the best consistency. Square and rectangular 11-gauge steel tubing.
  • Pivot Points - Pillow block bearings at all weight bearing pivot points for smooth movement and no maintenance.
  • Hand Grips - Extruded thermo rubber compound that is non-absorbing and wear and tear resistant. Grips retained with aluminum collars to prevent slipping.
  • Foot Platforms - Polyethylene coated for impact, corrosion and abrasion resistance.
  • Paint - Electrostatic powder coated paint finish for enhanced appearance and protection.
  • Resistance - The Jammer has a low starting resistance of only 8 lbs.
  • Plate-Loaded - The Hammer Strength Jammer accomodates olympic plates and has built-in horizontal plate storage posts.


  • Very conducive to explosive or transfer training.
  • Ideal training tool for the athletic market.
  • Feet on the floor positioning promotes functional training.
  • Highly versatile allowing both unilateral and bi-lateral training.
  • Top Ten selling Hammer Strength machine.


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