Spirit Fitness IS-2003 Leg Extension / Leg Curl

Product Overview

The Spirit Fitness IS-2003 Leg Extension / Leg Curl is a next-generation dual-function strength machine designed to deliver precise, efficient lower-body training in a compact footprint. Powered by Spirit’s i-Strength digital resistance system, it replaces traditional weight stacks with a servo-controlled mechanism, offering smooth, quiet, and highly accurate resistance.

Engineered for versatility and user convenience, the IS-2003 allows seamless switching between leg extension and leg curl exercises without leaving the seated position. With intelligent training modes, real-time feedback, and optimized biomechanics, it is ideal for performance training, rehabilitation, and premium commercial fitness environments.

PIN: IS-2003

Key Features

• Dual-Function Lower Body Training
  Combines leg extension and leg curl in one machine to effectively target quadriceps and hamstrings.
• Servo-Motor Digital Resistance
  Replaces weight stacks with smooth, precise electronic resistance and micro-adjustments for accurate loading.
• Four Intelligent Training Modes
  Includes Pure, Eccentric, Isokinetic, and Elastic modes for strength, power, endurance, and rehab training.
• Seated Exercise Transition
  Users can switch between exercises without leaving the seat, improving efficiency and workout flow.
• Optimized Axis of Rotation
  Designed to align with natural joint movement for smooth, safe, and biomechanically correct motion.
• Interactive Touchscreen Console
  Provides real-time performance feedback, resistance control, and guided training programs.
• Smooth, Silent & Low-Maintenance Operation
  No cables, pulleys, or weight stacks—reducing noise and maintenance requirements.
• Commercial-Grade Construction
  Heavy-duty steel frame ensures durability and long-term performance in high-use facilities.

Specifications

Console & Technology

• Display: 7”–10.1” touchscreen console
• Features: Real-time feedback, guided workouts, OTA updates
• Connectivity: Wi-Fi, Bluetooth, Spirit+ ecosystem

Performance

• Resistance Type: Electromechanical servo motor
• Resistance Range: Approx. 18 – 205 lb (8 – 93 kg)
• Training Modes: Pure, Eccentric, Isokinetic, Elastic

Design & Build

• Frame: Heavy-gauge commercial steel
• Seat: Adjustable padded seat for ergonomic support
• Movement: Seated dual-function with optimized pivot alignment

Power

• Power Supply: AC 110–240V

Dimensions & Capacity

• Product Size: Approx. 1665 x 1410 x 1131 mm
• Product Weight: ~158 kg
• Maximum User Weight: ~350 lb (159 kg)