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Steelflex® JGAB900 Ab Curl / Back Extension Machine
Build a Powerful Core — Strengthen Your Abs and Back in One Machine
Unlock your full potential with the Steelflex® JGAB900, the ultimate 2-in-1 core training machine designed to sculpt your abs, strengthen your lower back, and enhance overall stability. Engineered for performance and comfort, this versatile selectorized machine lets you seamlessly transition between ab crunches and back extensions — all from a single seated position.
Perfect for all fitness levels, the JGAB900 offers smooth, controlled motion, ergonomic support, and customizable adjustments, helping you build strength safely and effectively. Whether you’re training for aesthetics, performance, or injury prevention, this machine delivers a full-spectrum core workout that enhances posture, balance, and athletic power.
Why You’ll Love It
2-in-1 Functionality
Switch effortlessly between ab crunch and back extension exercises for a complete core and lower-back workout.
Smooth, Natural Motion
Oversized rollers and a precision pop-pin adjustment system provide fluid movement and full range of motion, supporting safe and effective workouts.
Premium Comfort & Support
The high-density lumbar pad and cold-latex leather upholstery cradle your torso for comfort and correct spinal alignment during intense training.
Personalized Fit for Every User
The adjustable foot rack offers three height positions (high, mid, low) to ensure perfect positioning for users of all sizes.
Commercial-Grade Durability
Built from 13-gauge steel with a two-coat powder-coated finish, this machine is engineered for long-term use in gyms, training studios, and home fitness centers.
Your Core. Reinvented.
Experience the perfect balance of strength and flexibility with the Steelflex® JGAB900 Ab Curl / Back Extension Machine. Designed for smooth performance, ergonomic comfort, and commercial-grade durability, it’s the ultimate core training solution for athletes, bodybuilders, and anyone serious about results.
Stop choosing between abs and back day — train both, better.
Build balance, power, and definition with Steelflex.