Spirit Fitness SP-4605 Leg Extension / Leg Curl

Product Overview

The Spirit Fitness SP-4605 Leg Extension / Leg Curl is a dual-function commercial strength machine designed to efficiently train opposing muscle groups—the quadriceps and hamstrings—in one compact station. Its seated, easy-switch design allows users to transition between exercises without repositioning, improving workout flow and space efficiency. Engineered with optimized biomechanics, smooth resistance, and durable construction, the SP-4605 delivers precise, balanced lower-body development for professional fitness environments.

PIN: SP-4605

Key Features

• Dual-Function Lower Body Training
  Combines leg extension and leg curl exercises to target opposing muscle groups in a single unit.
• Seated Quick-Switch Design
  Users can adjust and switch exercises without leaving the seat, enhancing convenience and workout efficiency.
• Optimized Axis of Rotation
  Ensures proper joint alignment and natural movement feel for both extension and curl exercises.
• Balanced Muscle Development
  Designed to effectively train both quadriceps and hamstrings for improved lower-body strength and symmetry.
• Smooth Cable-Driven Resistance
  Provides fluid, controlled motion throughout the full range of movement.
• Integrated Rep Counter & Storage
  Tracks workout performance and includes a top-cap tray for personal items.
• Commercial-Grade Construction
  Heavy-duty steel frame and premium components ensure durability in high-traffic gym environments.

Specifications

Performance

• Exercise Type: Leg extension & leg curl
• Resistance System: Selectorized weight stack
• Weight Stack: 132 kg / 290 lb
• Increment: 5 lb increments
• Movement: Cable-driven dual-function system
• Target Muscles: Quadriceps and hamstrings

Design & Build

• Frame: Heavy-duty commercial-grade steel
• Finish: Electrostatic powder-coated, corrosion-resistant surface
• Seat: Ergonomic adjustable seat for proper alignment
• Mechanics: Optimized pivot and axis for dual-function biomechanics
• Cushioning: High-density foam with premium upholstery
• Convenience Features: Rep counter, storage tray, enclosed weight stack 

Dimensions & Capacity

• Dimensions (L × W × H): 1407 × 1373 × 1580 mm (55" × 54" × 62")
• Machine Weight: 271 kg / 597 lb
• Weight Stack: 132 kg / 290 lb
• Maximum Selectable Load: Approx. 128 – 132 kg range
• Footprint: Compact dual-station design ideal for commercial facilities