Spirit Fitness i-Strength Leg Ext/Curl
Product Code: spirit-fitness-i-strength-leg-ext-curl
Price: $7,299.99
Spirit Fitness i-STRENGTH Leg Ext/Curl
Advanced Leg Extension and Leg Curl Strength Training
The Spirit Fitness i-STRENGTH Leg Ext/Curl is a commercial dual-function strength machine designed to target the quadriceps and hamstrings from one convenient seated station. Combining electronically adaptive resistance with intelligent training technology, the i-STRENGTH Leg Ext/Curl provides a modern approach to lower-body strength training for commercial fitness facilities.
With an 18–201 lb electronically adaptive resistance range, four dynamic training modes, and an intuitive 10.1-inch touchscreen, this machine gives users multiple ways to customize their workouts. The Pure, Eccentric, Isokinetic, and Elastic modes provide training variety while allowing users to adjust the resistance experience to their individual goals.
The machine is designed for easy transitions between leg extension and leg curl exercises while remaining seated. Its optimized axis of rotation promotes a smooth, natural movement pattern, while the padded adjustable seat helps users establish a comfortable and consistent training position.
Built with a heavy-gauge steel frame and commercial-grade components, the Spirit Fitness i-STRENGTH Leg Ext/Curl is designed for demanding gym environments, health clubs, training centers, and other commercial fitness facilities.
Premium Features
Dual-Function Leg Extension and Leg Curl
The i-STRENGTH Leg Ext/Curl combines two essential lower-body exercises in one machine. Users can train the quadriceps with leg extensions and the hamstrings with leg curls without moving to another station.
Electronically Adaptive Resistance
The advanced electronic resistance system provides an 18–201 lb resistance range, allowing users to select an appropriate training level while eliminating the need for a traditional weight-stack configuration.
Four Dynamic Training Modes
The i-STRENGTH Leg Ext/Curl offers four distinct training modes:
- Pure – Traditional resistance training for foundational strength work.
- Eccentric – Emphasizes the controlled lowering phase of the movement.
- Isokinetic – Provides resistance based on movement speed.
- Elastic – Provides an alternative resistance profile for additional training variety.
Seated Exercise Transitions
Users can transition between leg extension and leg curl exercises while remaining seated, helping streamline workouts and improve training efficiency.
Natural Axis of Rotation
The optimized axis of rotation is engineered to provide a smooth and natural movement path throughout both leg extension and leg curl exercises.
Padded Adjustable Seat
The padded adjustable seat allows users to customize their position while providing support and comfort during lower-body training.
10.1-Inch Touchscreen
The integrated 10.1-inch touchscreen provides an intuitive interface for selecting training modes, adjusting workouts, and viewing real-time performance information.
Intelligent Training Technology
The i-STRENGTH platform combines electronically controlled resistance with intelligent software to provide a modern strength-training experience.
Built-In Wi-Fi
Built-in Wi-Fi supports over-the-air software updates, helping keep the machine's software current.
Commercial-Grade Construction
The heavy-gauge steel frame and commercial-grade components are designed to withstand regular use in demanding fitness environments.
Low-Profile Design
The low-profile frame provides a streamlined appearance while maintaining a sturdy commercial construction.
Integrated Storage
Convenient storage trays located on top of the resistance tower provide space for small personal items and accessories.
Specifications
| Specification | Details |
|---|---|
| Product Type | Dual-Function Leg Extension / Leg Curl |
| Series | i-STRENGTH |
| Model | CSI-LELC |
| Resistance System | Electronically Adaptive Resistance |
| Minimum Resistance | 18 lb |
| Maximum Resistance | 201 lb |
| Training Modes | Pure, Eccentric, Isokinetic, Elastic |
| Display | 10.1" Diagonal Touchscreen |
| Exercises | Leg Extension and Leg Curl |
| Seat | Padded, Adjustable |
| Movement Design | Natural Axis of Rotation |
| Frame | Heavy-Gauge Steel |
| Finish | High-Quality Electrostatic Powder Coat |
| Foot Support | Steel Feet with Rubber Foot Covers |
| Storage | Integrated Storage Trays |
| Connectivity | Built-In Wi-Fi |
| Software | Over-the-Air Software Updates |
| Power | 120V / 20A Cord and Outlet |
| Dimensions | 65.6" L x 55.5" W x 44.5" H |
| Machine Weight | 348.3 lb |
| Maximum User Weight | 350 lb |
| Commercial Warranty | 10 Years Frame/Welds/Cams; 5 Years Bushings/Bearings/Shocks/Pulleys; 2 Years Console/Resistance Module; 1 Year Paint/Finishes, Cables, Grips, Pull-Pin Components, Rail Wheels, Attachments and Other Listed Parts; 6 Months Upholstery; 1 Year Labor on Console/Resistance Module |
Why Choose the Spirit Fitness i-STRENGTH Leg Ext/Curl?
Two Essential Leg Exercises in One Machine
The dual-function design combines leg extension and leg curl training, helping facilities provide more lower-body exercise options from a single strength station.
Advanced Electronic Resistance
The 18–201 lb resistance range gives users a broad selection of resistance levels for different training requirements.
Multiple Training Modes
Pure, Eccentric, Isokinetic, and Elastic modes provide additional workout variety compared with conventional fixed-resistance strength equipment.
Convenient Exercise Changes
The ability to switch between leg extension and leg curl exercises while seated helps reduce unnecessary movement between exercises.
Natural Movement
The engineered axis of rotation is designed to provide smooth movement throughout both exercise patterns.
Adjustable User Positioning
The padded adjustable seat helps accommodate different users and establish a consistent exercise position.
Modern Technology
The 10.1-inch touchscreen, electronic resistance system, intelligent software, and built-in Wi-Fi give the machine a modern technology-focused design.
Commercial Durability
Heavy-gauge steel construction and commercial-grade components make the i-STRENGTH Leg Ext/Curl suitable for facilities with frequent equipment use.
Muscles Worked
Quadriceps
The quadriceps are the primary muscles targeted during the leg extension exercise. The movement involves extending the knee against resistance.
Hamstrings
The hamstrings are the primary muscle group targeted during the leg curl exercise. The movement involves bending the knee against resistance.
Glutes
The gluteal muscles can contribute to lower-body stabilization and positioning during seated leg-training movements.
Calves
The calf muscles may contribute to lower-leg stabilization during the exercises, although they are not the primary target of the machine.
Benefits
Targeted Lower-Body Training
The machine provides focused resistance training for the quadriceps and hamstrings.
Exercise Versatility
Leg extension and leg curl functionality gives users two complementary lower-body exercises from one machine.
Adjustable Resistance
Electronically adaptive resistance from 18 to 201 lb allows users to select a resistance level appropriate for their training needs.
Progressive Training Variety
Four resistance modes provide additional options for changing the training experience and exercise stimulus.
Efficient Workouts
Seated transitions between leg extension and leg curl help users move efficiently between opposing lower-body exercises.
Personalized Positioning
The adjustable padded seat allows users to customize their setup for improved comfort and consistent positioning.
Smooth Exercise Motion
The natural axis of rotation is designed to provide a controlled and fluid movement path.
Technology-Enhanced Training
The touchscreen interface and intelligent electronic resistance system provide a modern alternative to conventional selectorized strength equipment.
Ideal For
Commercial Fitness Centers
An effective lower-body strength station for gyms that need versatile equipment designed for frequent use.
Health Clubs
The dual-function design provides members with convenient access to both quadriceps and hamstring exercises.
University and Collegiate Fitness Centers
Suitable for recreational fitness facilities and strength-training areas serving students and athletic populations.
Athletic Performance Centers
The adjustable resistance and multiple training modes can complement structured lower-body strength programs.
Personal Training Studios
Trainers can use the dual-function design and adjustable resistance to incorporate targeted quadriceps and hamstring exercises into individualized workouts.
Corporate Fitness Centers
The intuitive touchscreen and easy exercise transitions make the machine suitable for modern workplace fitness environments.
Community Recreation Centers
The combination of simple exercise selection, adjustable positioning, and commercial construction makes it a practical lower-body strength option.
Commercial Strength Training Facilities
The i-STRENGTH Leg Ext/Curl is designed for facilities looking for technologically advanced, space-efficient lower-body strength equipment.
Delivery, Assembly & Installation Options
Curbside Delivery
Fast and economical delivery to your facility entrance.
White Glove Delivery & Setup
Inside delivery, professional assembly, testing, and packaging removal. Optional old equipment removal available.
Commercial & Multi-Unit Installation
Ideal for large projects and multi-unit facilities. Includes layout planning and full equipment calibration.
Financing Available
Call 1-800-875-9145 For Assistance!
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