BUY Cybex Plate-Loaded Kneeling Leg Curl MACHINE — Commercial Hamstring Machine

The Cybex Plate-Loaded Kneeling Leg Curl is a commercial-grade leg curl machine engineered specifically for unilateral hamstring isolation. Built with an intuitive kneeling stance, forearm support pads, and a variable plate-loaded lever mechanism, this ham curl machine eliminates body sway and forces each leg to work independently. Fully inspected and professionally restored by Fit Cult Gym Supply, this unit features a durable frame refinish, fresh commercial upholstery, and smooth pivot operation. Available in stock in the USA for $2,800, it offers commercial training centers and serious private facilities a compact, high-performance solution for targeted posterior-chain strength.

Quick Product Summary

Specification Attribute	Detail
Brand / Manufacturer	Cybex
Model / Series	Cybex Plate-Loaded Kneeling Leg Curl (Ref / MPN: 16310)
Machine Type	Commercial Plate-Loaded Kneeling Leg Curl Machine
Equipment Category	Strength Equipment / Plate-Loaded Equipment
Condition	Restored (Mint Condition)
Resistance Type	Variable Plate-Loaded Resistance (Olympic Plates)
Training Format	Unilateral / Single-Leg Movement
Primary Muscle Targeted	Hamstrings
Secondary Muscles	Gastrocnemius (Calves), Glutes & Core Stabilizers
Max Weight Loading Capacity	225 lbs / 102 kg
Unladen Machine Weight	183 lbs / 83 kg
Footprint Dimensions	140 cm L × 127 cm W × 130 cm H (55″ L × 50″ W × 51″ H)
Price & Availability	$2,800
Weight Stack	None (Plate-Loaded)

Fit Cult’s Assessment & First-Hand Observations

Having inspected, tested, and restored this Cybex leg curl equipment directly at our facility, here are our hands-on technical takeaways:

• Unilateral Isolation: Traditional lying leg curl machine or seated leg curl machine options often allow a lifter’s dominant leg to absorb up to 60–70% of the resistance load during heavy sets. Because the Cybex Kneeling Leg Curl operates exclusively as a single-leg unit, it forces absolute strength symmetry between the left and right hamstrings, preventing the reliance on momentum found in dual-leg leg curl machines.

• Upper Body Stabilization: The combination of forward-angled forearm/elbow pads and tactical handgrips locks the torso completely into place. This prevents spinal arching (lumbar compensation), which is a common issue on a prone leg curl machine or standard lying leg curls.

• Compact Footprint: At just 183 lbs and taking up 140 × 127 cm of floor space, it provides maximum commercial hamstring isolation without consuming the footprint required by massive selectorized weight-stack towers or dual-function leg extension and curl machine combos.

Condition & Restoration Transparency

This pre-owned Cybex fitness leg machine has undergone a comprehensive restoration process by our team:

• Frame & Metalwork: Cleansed, structurally verified, and cosmetically restored to eliminate chips and surface wear while preserving frame integrity.

• Upholstery & Padding: The knee support pad, leg roller pad, and forearm/elbow rests have been restored with commercial-grade black vinyl padding designed to resist moisture and high-volume gym wear.

• Mechanics & Pivot Points: The lever arm rotation, knee-axis alignment pivot, and adjustment pin mechanisms were disassembled, cleaned, and tested under load to ensure smooth travel.

• Known Imperfections: No functional defects exist. Minor cosmetic variance consistent with pre-owned commercial equipment may remain, but operational performance is fully verified.

Detailed Product Description

The Cybex Plate-Loaded Kneeling Leg Curl stands as one of the most effective unilateral leg machines gym owners can add to their facility floor. Designed around human biomechanics, it addresses the structural limitations found in traditional leg extension leg curl machine units by placing the lifter in a supported, hip-extended kneeling position.

Biomechanical Superiority of the Kneeling Setup

When performing a leg curl with machine, hip angle significantly influences hamstring tension. On a seated hamstring curl machine, the hips are flexed at 90 degrees, putting maximum stretch on the proximal hamstring tendons. On a prone hamstring curl machine or standard lying hamstring curl, the body is flat, but users often arch their lower back when fatigue sets in. The Cybex Kneeling Leg Curl balances this by positioning the non-working knee on an adjustable platform while the working leg hangs freely along the rotational axis.

By resting the forearms comfortably on the elevated elbow pads and gripping the forward handles, your upper body remains perfectly still. This biomechanical lockout isolates knee flexion, ensuring that every ounce of plate resistance directly targets the hamstring complex without unwanted momentum. Unlike performing leg curls without machine setups or improvised band movements, this specialized machine hamstring curl unit delivers precise resistance throughout the entire motion.

Variable Plate-Loaded Resistance

Rather than relying on friction-heavy weight stacks or cables found on standard planet fitness leg machines, this Cybex unit utilizes a direct-linkage plate-loaded lever arm. As you perform a machine hamstring curl toward your glutes, the variable resistance curve matches the natural strength curve of the knee flexors. Loading standard Olympic plates onto the horn allows lifters to make micro-adjustments in weight capacity up to the machine’s maximum load rating of 225 lbs (102 kg). It integrates seamlessly alongside your facility’s gym leg press machine, seated leg press machine, or quad machine setups for balanced upper-leg training.

Features vs. Benefits

Features

• Unilateral Lever System: Independent single-leg arm movement for targeted standing leg curls.

• Kneeling Stance Pad: Padded platform that positions the non-working leg safely during a standing hamstring curl machine leg workout.

• Elevated Forearm & Hand Supports: Padded chest/elbow positioning handles that eliminate lumbar compensation.

• Variable Plate Loading Horn: Accommodates standard 2-inch Olympic weight plates.

• Knee-Axis Rotational Alignment: Pivot point engineered to align precisely with the human knee joint.

Benefits

• Corrects Muscle Imbalances: Forces each leg to curl the exact same load independently, eliminating dominance during leg workouts machines routines.

• Protects Lower Back: Prevents hip hiking and lower-back arching often seen during heavy lying hamstring curls.

• Upper Body Stability: Eliminates body sway, maximizing tension directly on the working leg when compared to standard standing hamstring curls.

• Simple Maintenance: No cables, pulleys, or weight stack selector pins to wear out or snap.

• Space-Efficient: Fits easily into tight strength zones, personal training studios, or a home gym with leg press and lower-body setups.

Training Applications & Targeted Muscles

Exercise Applications

• Unilateral Hamstring Curls: Perform targeted single-leg knee flexion reps to build balanced hamstring strength using a dedicated exercise machine leg platform.

• Hamstring Peak Contraction Hold: Pause at the top of the curl movement to maximize peak isometric tension on the biceps femoris.

• Eccentric Tempo Training: Control the lowering phase of the plate-loaded arm to target hypertrophy and tendon resilience.

• Complementary Lower-Body Programming: Pair this dedicated hamstring machine with quad extension machine sets, leg presses, or a leg press workout to ensure comprehensive anterior and posterior chain development.

Primary Muscle Target

• Hamstrings: Biceps Femoris (long and short heads), Semitendinosus, and Semimembranosus.

Secondary Muscle Targets

• Gastrocnemius (Calf): Assists during knee flexion initiation.

• Gluteus Maximus & Core Stabilizers: Engaged statically to hold hip extension on the kneeling pad.

Target Audience: Who Is This Machine For?

Best Suited For:

• Commercial Gyms & Fitness Centers: Adding a dedicated unilateral hamstring machine option alongside traditional seated leg curls and lying leg curl equipment.

• Athletic Performance & Rehab Centers: Ideal for strength coaches and physical therapists correcting left-to-right leg strength deficits post-injury (e.g., ACL rehab or hamstring strain prevention).

• Private Training Studios: Perfect for personal trainers looking for specialized gym equipment for legs that ensures precise, fool-proof client positioning during lower-body sessions.

• Serious Home Gyms: Lifters wanting commercial-grade Cybex biomechanics in a compact footprint alongside their leg press weight machines or leg lift machines.

Who May Not Need It:

• Facilities looking exclusively for multi-station selectorized weight stack machines, a dual leg curl extension machine, or an all-in-one leg extension and curl machine.

Practical Buying Considerations

• Floor Footprint & Clearance: The physical machine dimensions are 140 cm L × 127 cm W × 130 cm H (55″ L × 50″ W × 51″ H). Allocate an extra 2–3 feet around the side weight horn to easily load and unload Olympic plates.

• Ceiling Clearance: At 130 cm (51 inches) in height, this leg machine easily fits under standard 8-foot home or basement ceilings.

• Weight Plate Requirement: As a plate-loaded unit, weight plates are sold separately. Ensure you have standard 2-inch Olympic plates ready for use.

• Delivery & Installation: Ships fully or partially assembled via freight on a pallet. Ensure wide doorway access (at least 32 inches wide) for installation into your facility.

Product Comparison: Kneeling vs. Seated vs. Lying Leg Curls

Machine Type	Cybex Kneeling Leg Curl	Seated Leg Curl Machine	Lying Leg Curl Machine
Movement Style	Unilateral (Single Leg)	Bilateral or Unilateral	Bilateral (Both Legs)
Hip Position	Extended / Neutral	Flexed (90 Degrees)	Prone / Extended
Lumbar Stress	Extremely Low (Forearm Supported)	Low-to-Moderate	Moderate (Risk of arching)
System Loading	Plate-Loaded (Olympic)	Selectorized Stack	Selectorized or Plate-Loaded
Primary Targeted Muscle	Hamstring Isolation	Hamstrings & Hip Flexors	Hamstrings
Footprint Efficiency	High (Compact)	Moderate-to-Large	Large / Long

Buyer FAQ (Answer Engine Optimization)

What is the Cybex Plate-Loaded Kneeling Leg Curl?

The Cybex Plate-Loaded Kneeling Leg Curl is a commercial leg curl machine designed for unilateral (single-leg) hamstring isolation. The user kneels on one leg while resting their forearms on upper support pads, curling a weighted lever arm with the opposite leg.

Is the Cybex Kneeling Leg Curl plate-loaded or selectorized?

This model is a plate-loaded leg curl machine, meaning resistance is added using standard Olympic weight plates loaded onto the side lever horn, rather than using a selectorized weight stack and cable pulley system.

How much weight can the Cybex Kneeling Leg Curl hold?

The machine has a maximum weight-carrying capacity of 225 lbs (102 kg) on its loading horn.

How much does the machine itself weigh?

The unladen machine weight is approximately 183 lbs (83 kg), making it sturdy yet easy to maneuver when arranging your equipment for leg workout areas.

What are the dimensions of this machine?

The machine measures approximately 140 cm L × 127 cm W × 130 cm H (55″ L × 50″ W × 51″ H).

Does this machine train both legs simultaneously?

No. The Cybex Kneeling Leg Curl is specifically engineered as a unilateral leg curl machine. Training one leg at a time prevents the stronger leg from compensating for the weaker one, which often happens on a standard lying leg curl machine or seated leg curl machine.

How does a kneeling leg curl compare to a leg extension machine?

A leg extension machine (or quad extension machine) targets the machine quadriceps on the front of the thigh through knee extension. In contrast, a ham curl machine targets the hamstrings on the back of the thigh through knee flexion. Both are crucial components when outfitting leg machines gym floors.

Contextual Internal Linking Strategy

• Parent Category: Explore our complete inventory of commercial plate-loaded equipment to outfit your facility.

• Strength Category: Browse our entire catalog of commercial strength equipment for heavy-duty gym solutions.

• Related Product Comparison: Compare this unit with our selectorized Life Fitness Pro2 Lying Leg Curl, the Star Trac Impact Seated Leg Curl, or the Hammer Strength MTS Kneeling Leg Curl.

• Leg Press Options: Pair your hamstring training with our commercial Cybex OG 45 Leg Press or Cybex OG Plate Loaded Squat Press.

• Customer Support: Questions about shipping or freight quotes? Contact our equipment specialists or learn more about Fit Cult Gym Supply.

Topical Authority Contribution

• Parent Topic: Commercial Leg Machines & Lower Body Equipment

• Subtopic: Unilateral Hamstring Machines & Biomechanical Isolation

• Topical Purpose: Demonstrates Fit Cult’s deep expertise in sourcing, refurbishing, and evaluating specialized pre-owned commercial equipment, establishing authority over generic reseller sites and providing comprehensive workout machines names clarity for gym buyers.

Direct Q&A Summaries

What muscles does the Cybex Kneeling Leg Curl work?

 The Cybex Kneeling Leg Curl primarily isolates the hamstring muscle group, including the biceps femoris, semitendinosus, and semimembranosus. Secondary muscle involvement includes the gastrocnemius (calves) and gluteal stabilizers that help hold body position on the kneeling pad.

How does a kneeling leg curl differ from a lying leg curl or seated leg curl?

 A kneeling leg curl forces single-leg training while supporting the upper body on forearm pads, preventing lower-back arching. A lying leg curl machine requires lying flat on your stomach, which can strain the lower back under heavy loads, while a seated leg curl machine places the hips in a 90-degree flexed position.