VO3fitness
ONYX Leg Extension
Pickup available at Calgary, Alberta Warehouse
Usually ready in 2-4 days
The ONYX Leg Extension is a premium plate-loaded strength machine engineered specifically for quadriceps development with smooth, controlled knee extension performance. Built for commercial gyms and high-end personal training studios, its modern aesthetic and solid construction support reliable training in high-traffic environments.
An ergonomically contoured backrest is infinitely adjustable to accommodate users with different leg lengths, ensuring correct posture alignment and stable support throughout the full range of motion. A wide seat pad improves comfort for users with varying leg circumferences, while the ergonomically designed ankle roller follows the natural movement path of the lower leg for effective, joint-friendly quad activation. An isolated arm design supports unilateral training to reduce compensation and promote balanced strength development between both legs.
- Plate-Loaded Leg Extension: Designed for isolated quadriceps training and controlled knee extension strength.
- Infinitely Adjustable Backrest: Easily adapts to different leg lengths for optimal posture alignment and training comfort.
- Wide Seat Pad: Comfortable support for users with varying leg circumferences, improving stability during heavy sets.
- Ergonomic Ankle Roller: Aligns with natural lower-leg movement path for smooth, effective quad activation.
- Isolated Arm Design: Supports unilateral training to reduce compensation and promote balanced left/right strength development.
- Stable Commercial Construction: Reinforced build designed for high-frequency use in commercial gym environments.
- Leg Extension: Primary quad isolation movement to build knee extension strength and muscle definition.
- Quadriceps Hypertrophy: Ideal for controlled volume training to build quad size, shape, and endurance.
- Strength Development: Plate-loaded progression supports heavier training and progressive overload programming.
- Unilateral Quad Training: Train one leg at a time to improve symmetry and correct muscular imbalances.
- Lower-Body Accessory Work: Complements squats, leg press, hack squat, and athletic performance routines.
- Dimensions (L × W × H): 63.0 × 63.0 × 49.6 in
- Total Weight: 243 lb
- Resistance Type: Plate-loaded
- Target Muscle Groups: Quadriceps (primary)
- Intended Use: Commercial gyms and high-traffic training facilities
- Infinitely adjustable backrest supports proper alignment for more effective quad training
- Ergonomic ankle roller improves comfort and ensures smoother reps
- Isolated arms enable unilateral training to build balanced lower-body strength
- Commercial-grade construction designed for daily high-traffic use
