The SportsArt DF-301 combines leg press and calf extension into one Performance Series machine — switching between exercises simply by adjusting foot placement on the footplate. A 1:2 pulley ratio delivers 440 lb of effective resistance from the weight stack, a step-through design ensures easy access, and a fully adjustable seat back accommodates users of every size.
Function 2-In-1 | Effective Stack 440 lb | Pulley Ratio 1:2 | Access Step-Through | Unit Weight 535 lb |
The DF-301 trains the primary lower body movers via leg press — quads, glutes, and hamstrings — and isolates the calves via calf extension, all from one station. Switching between exercises requires only a change in foot placement on the footplate — no weight changes, no machine changes, no wasted time between movements.
The 1:2 pulley ratio doubles the effective resistance at the footplate relative to the weight stack — delivering 440 lb of effective pressing force that challenges serious lower body strength without requiring a physically massive weight stack. This mechanical advantage keeps the machine compact while delivering the resistance serious leg training demands.
The step-through frame lets users walk directly into the seat from the side without having to climb over the machine — making getting on and off safe and intuitive, particularly for users under heavy loading or those with limited mobility. In a high-turnover commercial environment, easy entry and exit keeps the station accessible and efficient.
The fully adjustable seat back accommodates users of different heights, ensuring proper knee angle at the start of both leg press and calf extension movements. Correct positioning protects the knee joint and maximizes force transfer through the legs — critical for safe, effective lower body pressing under heavy loads.
The weight stack uses a combination of 11 lb and 16.5 lb plates (8 of each) for a total physical stack of 220 lb — producing 440 lb of effective resistance at the footplate via the 1:2 ratio. The mixed plate system provides useful incremental options for progressive loading across both leg press and calf extension movements.
Weight Stack (Physical) 220 lb | Effective Resistance 440 lb (1:2 Ratio) | Plate Increments 8 × 11 lb + 8 × 16.5 lb |
Unit Weight 535 lb | Frame Step-Through Design | Dimensions 93.3" L × 43.7" W × 67.2" H |
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