MODEL 2721
A300 Abdominal
MORE VERSATILE. MORE EFFECTIVE. SAFER.
A BETTER abdominal machine FOR EVERY BODY.
The finest in American engineering and manufacturing.
Made in U.S.A. with domestic and globally sourced material.
VERSATILITY
A More versatile abdominal machine
Use a variety of training and rehabilitation methods to improve strength, speed, and power — all with one machine.
“Others build their machines like tanks. We build ours like aircraft — strong, but very light.”
DENNIS KEISER
Pure Resistance Technology™
Low-inertia design makes it more versatile.
Pure Resistance Technology (PRT) drives the design of the A300 Abdominal. We remove as much mass as possible to give you a pure, highly versatile resistance.
“Others build their machines like tanks. We build ours like aircraft — strong, but very light.”
DENNIS KEISER
LOW-INERTIA ARCHITECTURE
WE REMOVE ANY MASS WE DON’T NEED.
We engineer the linkages between you and the resistance to have as little mass as possible. With less mass, there’s less inertia and momentum.
PNEUMATIC RESISTANCE
A MORE VERSATILE ALTERNATIVE TO IRON
We use compressed air under digital control instead of iron resistance. It has almost no mass, inertia, or momentum. No matter how fast you move, you can’t throw it and you don’t have to slow it.
VERSATILITY
LOW-INERTIA MEANS MORE WAYS TO TRAIN AND REHAB, MORE EFFECTIVELY.
With almost no inertia, your resistance is more effective and safer at a wide variety of speeds. This gives you more ways to train and rehab.
Prevent collateral damage with almost zero shock loading.
Iron's inertia and momentum may cause repeated stress on joints and connective tissue. Keiser’s Dynamic Variable Resistance eliminates that so your training is far less likely to cause injury.
Avoid repeated shock loading: The A300 Abdominal has virtually none of the sudden excess forces you get from iron.
Protect your joints: With almost no shock loading, you avoid much of the risk to joints and connective tissue over time.
Less pain when you work out: Without the shock loading of iron, you get all of the benefits of strength training with significantly less pain.
Optimize resistance
Choose the precise resistance for your goals.
With one-pound or one-kilogram increments, ranging from 0 - 276 lbs / 0 - 125 kg, it’s easy to find the right resistance level.
Optimize your resistance level. Set resistance at the precise level best for you and your goals.
Don’t wait for the next ten pounds. Continually challenge muscles with frequent, small increases in resistance.
Ideal when training for speed and power. Small increments are an important tool when training fast with lower resistance.
Perfect for rehab and reconditioning. One-pound increments and a starting resistance of zero help find the right resistance level to recover from injury or a deconditioned state.
Thumb-button Resistance Control
Change resistance on the fly during exercise.
Change resistance at any point during a rep with push-button convenience and digital precision.
Isometric overload made easy. Get into an isometric position, then increase resistance for isometric training.
Eccentric overload made easy. Increase resistance after the concentric phase of a rep.
Get rehab patients into position before adding load. This makes it easier to determine what resistance level the patient can achieve in tiny increments.
Model 2721
A300 Abdominal
Engineered to Perform. Built to last.
Innovative engineering. Solidly reliable. And simply more versatile.
A STRONG CORE FOR ANY BODY
Since the upper body’s direct base of support is the core, developing strong, fast and powerful abs are key for upper body performance. Keiser’s design and engineering set this machine apart. Unlike conventional machines that use iron, the A250 Abdominal’s low‑inertia design gives you a smooth resistance. This can help protect joints and connective tissue from shock loading. The result is a workout unlike anything else on the market. And it’s perfect for people at any fitness level — from older adults to elite athletes.
Customize Equipment
Make it match. Make it yours.
Customize your order with your logo and colors to your team, brand, or the mood you want to create.
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