The ONYX Seated Hack Squat is a premium plate-loaded strength machine engineered for focused lower-body performance and quad-dominant squat training. Designed for commercial gyms and upscale training studios, its modern aesthetic and reinforced construction are matched with a high-precision dual-axis linear guide system for an exceptionally smooth, stable squat path. Ergonomically optimized seat and backrest angles support natural hip-knee coordination during the squat movement. The forward-leaning back pad provides firm torso support while maintaining ideal hip flexion—minimizing glute compensation and intensifying quadriceps engagement. A clearly marked safety catch lever allows quick, effortless operation for secure training, while the oversized non-slip footplate supports multiple stances and heights for comfort, stability, and full range of motion. .accordion-section { margin-bottom: 10px; border: 1px solid #ddd; border-radius: 6px; overflow: hidden; } .accordion-label { display: block; background-color: #f7f7f7; padding: 12px; font-weight: bold; cursor: pointer; } .accordion-content { max-height: 0; overflow: hidden; background: #fff; padding: 0 12px; transition: max-height 0.4s ease, padding 0.4s ease; } input.accordion-toggle { display: none; } input.accordion-toggle:checked ~ .accordion-content { max-height: 4000px; padding: 12px; } .accordion-content ul { margin: 0; padding-left: 20px; list-style-type: disc; } Key Features Plate-Loaded Seated Hack Squat: Designed for controlled squat training with strong lower-body strength development. High-Precision Linear Guide System: Dual-axis rails create a smooth, stable squat path—eliminating wobble or jamming. Ergonomic Pad Configuration: Forward-leaning backrest reduces glute compensation and increases quadriceps targeting. Oversized Non-Slip Footplate: Supports multiple stance widths and heights for comfort, stability, and full range of motion. Clearly Marked Safety Catch Lever: Prominent, easy-to-use lever improves usability and training safety. Stable Commercial Construction: Reinforced structural design built for heavy use in high-traffic gym environments. Training Options Seated Hack Squat: Primary squat pattern designed to emphasize quads with stable body positioning. Quad-Dominant Training: Forward-leaning support angle increases knee drive and quadriceps activation. Lower-Body Strength: Plate-loaded progression supports heavy training and progressive overload. Hypertrophy Programming: Ideal for controlled volume work to build quad size, shape, and endurance. Stance Variation: Oversized footplate supports multiple foot positions to adjust emphasis and comfort. Product Specifications Dimensions (L × W × H): 87.7 × 58.9 × 49.2 in Total Weight: 500 lb Resistance Type: Plate-loaded Target Muscle Groups: Quadriceps (primary), glutes/hamstrings (secondary) Intended Use: Commercial gyms and high-traffic training facilities Why Choose ONYX Linear guide system delivers smoother, more stable squats for higher-quality reps Forward-leaning pad design increases quad emphasis while reducing glute compensation Oversized footplate supports stance variety for user comfort and precise targeting Commercial-grade build and safety catch lever designed for confident heavy training
