APXMAX Dual Series – Back Extension / Ab Crunch
The APXMAX Dual Series Ab Crunch / Back Extension machine delivers two essential exercises in one compact unit, allowing users to efficiently strengthen both the abdominal and lower back muscles. Designed to promote proper form, it’s perfect for building core stability, improving posture, and preventing injury, making it ideal for gyms and rehabilitation settings.
Compact, Efficient & User-Friendly
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Dual-Function Use: Performs both ab crunches and back extensions
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Space-Saving Design: Combines two key movements in a single machine
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Core Stability Focus: Supports spine alignment and controlled motion
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Suitable for All Fitness Levels: Perfect for full-body programs
Heavy-Duty Frame & High-Quality Materials
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Main Frame: 118×75×3.0 mm semi-elliptical pipe
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Functional Area Frame: 120×50×3.0 mm flat oval pipe
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Movement Arm: 80×40×3.0 mm pipe
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Joint Pipe: 50×100×3.0 mm flat oval pipe
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Material: Constructed from high-quality Q235 steel
Comfort & Performance
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Cushioning: MC high-resilience foam wrapped in premium PU leather
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Shroud: 4 mm ABS virgin material, strong and eco-friendly
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Cable: Japan-made 7×19 coated wire, rated for up to 1400 kg tension
Specifications
Warranty

Pin and Plate Load Machines
Warranty Period :
| Structural Steel Framework |
Lifetime |
| Rotary Bearings, Weight Stacks, Pulleys, Guide rods, Structural moving parts |
2 years |
| Cable, Linear Bearings, Springs |
1 year |
| Upholstery, handgrips, all other items not listed |
6 Months |
Do Not:
- Use Outdoors
- Drop the weight stacks down during a rep, this can cause damage
- Use on uneven surfaces
Exclusions:
- Normal Wear and Tear
- damage from incorrect installation
Maintenance:
- Any damaged components should be replaced by a service technician
- Service the machine by a qualified service technician
- Regularly check for signs of wear
***We highly recommend this machine to be installed by a professional, incorrect installation may result in the warranty becoming void***