ONYX Leg Extension Attachment
SHOP NOW, PAY LATER
AUS & NZ
AUS & NZ
AUS & NZ
14 Day Money Back Promise
Dispatched from our Warehouse
Introducing the ONYX Leg Extension/Curl Attachment – a professional-grade power rack accessory designed to bring dedicated leg isolation training to your home or commercial gym. This versatile attachment transforms your power rack into a complete leg training station, allowing you to target your quadriceps and hamstrings with precision and efficiency.
The dual-function design enables both leg extension and leg curl exercises with a simple adjustment, eliminating the need for separate machines and saving valuable floor space. The attachment features a comfortable padded seat and roller pads covered in tear-resistant vinyl, providing exceptional comfort during even the most intense workouts.
Engineered to fit most standard power racks, the ONYX Leg Extension/Curl Attachment uses a secure mounting system that attaches and detaches quickly, allowing you to reconfigure your training space as needed. The heavy-duty construction includes 11-gauge steel tubing and reinforced welds, ensuring stability and safety with a weight capacity of up to 300 lbs.
Multiple adjustment points accommodate users of all heights, with quick-release pins for fast transitions between exercises or users. The plate-loaded design allows for progressive overload training, with weight posts that accept standard Olympic plates (adapter included) for consistent resistance throughout the full range of motion.
1. Dual-Purpose Functionality
Train both leg extensions and leg curls with one versatile attachment.
2. Adjustable Back Pad & Rollers
Easily customize for proper alignment, comfort, and full range of motion.
3. Commercial-Grade Build
Crafted from heavy-duty steel with dense foam padding for long-lasting performance.
4. Fast, Secure Rack Integration
Mounts quickly to ONYX racks for a solid, stable training experience.
Construction: Heavy-duty steel frame
Pad Material: High-density foam with durable synthetic leather cover
Compatibility: Fits ONYX racks (75mm x 75mm uprights, 16mm hole diameter)
Mounting System: Quick-attach pin system for fast installation
Foot Roller Diameter: 100mm
Total Width: ~600mm
Total Height: ~700mm (adjustable depending on mount point)
Warranty Information
Our goal is to supply you quality fitness equipment and all our items come with at least a one year warranty for home use. Commercial items come with a one year warranty for commercial use. Some items come with a lifetime frame guarantee and this will be specified on the product page. For full warranty please see our warranty
page.
10 weekly payments of $600
4 interest-free payments of $1,500
LEG EXTENSION ATTACHMENT
1
DUAL FUNCTION DESIGN
Perform both leg extensions and curls with a single attachment.
2
HEAVY DUTY CONSTRUCTION
Built from high-grade steel with a matte black finish for strength and style.
1
2
3
4
3
ADJUSTABLE FIT
Customizable pad and roller positions ensure proper alignment for any user.
4
SEAMLESS RACK INTEGRATION
Designed to mount quickly and securely onto ONYX racks.
