The Technogym Selection Pro Leg Extension is the gold standard for isolating the quadriceps. Part of the premium Selection Pro line, it is engineered to provide a safe and effective way to strengthen the knee extensors while minimizing stress on the anterior cruciate ligament (ACL).
The machine is highly regarded for its anatomical seat design, which ensures the user is locked into the correct position to isolate the quads without using the lower back or hips for momentum.
Technical Specifications
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Type: Professional selectorized lower-body isolation machine
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Target Muscles: Quadriceps (Rectus Femoris, Vastus Lateralis, Vastus Medialis, Vastus Intermedius)
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Movement Pattern: Independent movement arms (on newer Pro versions) or synchronized single-pad movement.
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Weight Stack (Standard): 100 kg (200 lbs)
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Weight Stack (Plus/Oversize): 130 kg (260 lbs)
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Incremental Weight: Includes the Smart Pin (2.5 kg / 5 lbs) for fine-tuned resistance adjustments.
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Backrest Adjustment: Easy-to-reach gas-assisted adjustment that allows users to change the seat depth while seated.
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Tibia Pad Adjustment: Multiple positions for the ankle roller to accommodate different leg lengths.
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Range of Motion (ROM) Device: Adjustable start position allows users to limit the degree of knee flexion, which is critical for rehabilitation and injury prevention.
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Biomechanics: Features Physiocam technology to ensure a constant resistance curve that matches the quadriceps’ strength—specifically providing more tension at the point of full extension.
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Smart Features: Integration with Unity™ Mini for rep counting, pace guidance, and digital workout tracking.
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Dimensions: 130 cm × 105 cm × 148.5 cm (51″ × 41″ × 58″)
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Total Weight: 278 kg (613 lbs)





















