Ground Base® Jammer Built for raw power and explosive performance, the Hammer Strength Ground Base® Jammer is the real deal—no imitations, no compromises. While racks try (and fail) to mimic its movement, only the Jammer delivers the perfect blend of converging and diverging motion, unlocking true athletic drive. Designed in the ‘90s and still unmatched today, it’s the gold standard for developing force, power, and on-field dominance. When it comes to training like an athlete, there’s no substitute—there’s only the Jammer. A PLATE-LOADED FAVORITE Bring the intensity of a gym workout home with the Plate Loaded Ground Base Jammer. This popular back machine can be found in some of the most iconic strength meccas around the world and has been a Hammer Strength staple for decades. UNMATCHED SINCE THE '90S The Ground Base® Jammer isn’t new—it’s legendary. While other companies try to replicate its movement with half-measures, only Hammer Strength delivers the true Jammer experience. Designed in the mid-90s and still dominating weight rooms today, it remains the ultimate training tool for explosive strength. HOW IT WORKS Athletes don’t just lift—they drive, push, and explode. The Ground Base® Jammer trains force production in the most athletic way possible, mimicking the powerful pressing movements seen in sport. The Jammer builds the kind of strength that translates to real performance. HOW IT'S MADE Hammer Strength plate loaded machines are made with 11-guage steel frames and electrostatic powder coat finish for maximum durability. There are numerous seat adjustments to allow you to find your perfect position and muscle isolation. Molded foam on the cushions provides comfort, support, and durability. All machines have holes in the feet that allow for easy anchoring to the floor. Does not include weights, bars or attachments.
