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.
Features you won’t find in conventional machines
Large digital display that shows resistance, sets, repetitions, and peak power
Thumb buttons let you change resistance without changing position — even during exercise
Fast, easy, and precise eccentric overloading
Change resistance in increments as small as one pound
Industry-leading lifespan and uptime for years of use
Unique versatility; five ways to train instead of only one
Fully adjustable to accommodate a wide range of users
Thick base for added stability
Why choose the A250 Abdominal?
Lower risk of injury. Pain-free range of motion.
The A250 Abdominal reduces resistance where you’re most vulnerable to injury. And the low inertia of our resistance system eliminates shock loading; sparing your joints and connective tissues from harmful forces.
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Achieve your training goals faster
Our machines increase resistance where you’re stronger and decrease resistance where you’re weaker. This allows your muscles to work at their full potential through every point in the range of motion.
Keiser’s machines focus on efficiency.