TuffStuff CalGym Back Extension

Your members will love the full range of motion results they get from the CalGym Back Extension CG-551. You'll love the rugged construction and low maintenance found in all TuffStuff fitness equipment.


Tuffstuff used a 7 gauge steel cam for advanced biomechanics, ensuring correct resistance curve from start to finish of every repetition. The over sized back pad provides ultimate user comfort and support.


Exercising on the Back Extension machine is a great way to strengthen the Erector Spinae group of muscles in the lower back. Studies have shown that conditioning this group of muscles can help alleviate symptoms of low back pain for many exercisers. What better reason to include routines on this piece of specialized finess equipment in all your programs?


  • Extended seat pad with integrated safety belt to allow various size users a good fit. 
  • Foot brace is non-skid diamond steel pate for secured foot positioning. 
  • Welded emergency cam stops help to further ensure safety for your members. 
  • Large exercise placards provide instruction on proper set up and use. 
  • Oversized weight identification stickers offer quick weight selection. 
  • Integrated storage compartment on weight stack covers. 
  • Dual sided, protective weight shields offer enhanced safety and durability.


  • LIFETIME: frames, welds, cams, and weight plates
  • 5-YEAR: bushings, pivot bearings, pulleys and guide rods
  • 1-YEAR: linear bearings, pull-pin components
  • 6-MONTH: finish, cables, upholstery and rubber grips
The Back Extension is one piece of fitness equipment that can benefit all of your clients, even those not in your strength program.
TuffStuff CalGym Back Extension Specifications