Best Fitness AB Mantis Bench

Make any time crunch time with the Best Fitness Semi-Recumbent Ab Crunch Bench. This ergonomically designed machine is built to help you tighten up your midsection, strengthen your back and improve your core stability.

The BFAB20's 45-degree seat angle puts you in position to isolate your abdominal muscles, for a more efficient workout. Plus, with two additional 5-degree reclining positions, you'll be ideally supported for an entire range of core exercises.

Its dual functionality lets you target your lower abs with knee raises and your upper abs with abdominal crunches. No other machine can provide such a total ab workout from a comfortable seated position.

The Best Fitness line of equipment takes much of the guesswork out of functional, effective home workouts with quality-built machines, ergonomically engineered equipment designs and a commitment to quality and customer satisfaction.

Unlike some other ab machines, which require the agility of an acrobat to be thoroughly effective, the AB20 Semi-Recumbent Ab Bench puts you in a comfortable, seated position to discover the many benefits of a regular midsection workout.

Never before has a single piece of equipment offered such an efficient combination of functionality and ease-of-use... anytime, anywhere in the comfort and convenience of your own home.

Best Fitness, your home, your gym!

  • Ergonomic 45-degree seat angle with two additional 5-degree reclining positions offers exceptional range of motion and adjustability for any size user
  • AB CRUNCH - Upper AB directed motion with durable upholstered, upper back support, textured grip handles and standard weight post with spring lock. And lock-out option to help support knee raises
  • KNEE RAISE - Lower AB directed motion with adjustable length, 2-position foot rests and standard weight post with spring lock
  • Three-position, adjustable upholstered seat provides comfort at any setting.
  • Arrives fully assembled
  • Assembled Dimensions: 56 x 117 x 163 cm (W x H x D); 3-year warranty

Ideal for beginners and mid level fitness enthusiasts looking for a quality home gym set up that fits in any budget.

Free shipping on all orders to anywhere in Australia.

All orders are dispatched from our warehouse in Woodville North SA 5012.

All orders are dispatched next business day.

Best Fitness Strength Warranty:

3 YEARS: Frame

1 YEAR: ALL parts.

1 YEAR: Motor (if applicable)

3 MONTHS: Electronics (if applicable) 


Check our FAQ or contact us at or 1800-957-859 or the chat box at the bottom right-hand corner of our website.

Customer Reviews

Based on 6 reviews
Melanie Montgomery✔️
AB mantis bench

I’ve been using ab machine for several weeks now and I’m happy with my purchase. The leg raise moment isolates abdominal muscles very effectively and the crunch moment does a reasonable job too! I think it represents value for money as the machines I have used that are better all cost at least 5 times what the AB MANTIS did!

Wasim Shahzad
Good product


Ronald Cooper


Martin Pelaez

10 out of 10

Angie La'ulu
Best fitness equipment

Arrived quickly regardless of current COVID19 pandemic. Easy to assemble and excellent packaging. Highly recommend their products and services, Angie