THE QUADRILOGY™ Selectorized Leg Extension + Seated Leg Curl Machine

THE QUADRILOGY is the fourth generation of our popular Leg Extension + Seated Leg Curl machine. It builds upon the feel, functionality, and adjustability of previous versions while incorporating higher felt resistance*, significant structural upgrades, premium materials, and numerous improvements developed from customer feedback. The Quadrilogy is also one of the first selectorized Temple of Gainz machines available with our patent-pending Beyond Power VOLTRA Digital Resistance Integration. This optional configuration allows a compatible Beyond Power VOLTRA to replace the traditional weight stack, reducing the initial cost of the machine while providing greater control over resistance, eccentric loading, and resistance-curve customization^.

Release Details

Release Date: September 2026