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Keiser A300 Seated Calf
Keiser A300 Seated Cal Machine

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Product Code: KEISERA300SC

Keiser A300 Seated Calf Machine - Explosive Leg Power
Weak Calves Are Like Flat Tyres!

Originally designed for world record holders Willie Banks (triple jump) and Mike Powell (long jump), our Keiser A300 calf machine features unilateral movement to help you develop balanced explosive lower-leg power. The machine automatically pre-loads and adjusts for leg length, and the footpad isolates the rotation around the ankle to give you a full range of motion. Your foot is the base of support with the ground, and the calf has to be able to transfer all of the strength and power you can produce to the ground. Having weak calf muscles is like driving a car on flat tires. The calf is essential in all levels of human performance, from the oldest old to the elite athlete.

Keiser’s Dynamic Variable Resistance is designed to provide a smooth consistent Variable Resistance force curve at any training speed. Each machine has its own unique Variable Resistance curve designed and tuned perfectly for the muscles being used in that particular exercise. For users, this means that working out any speed, you’ll always be training at maximum efficiency.

Pneumatic Resistance

Keiser equipment is air powered (pneumatic), meaning lighter, quieter equipment in your facility. Compressed air for Keiser equipment is delivered through Keiser’s custom designed air supply system. Keiser strength equipment weighs less and is quieter than iron-based machines.

Power Display
The Power Display provides both resistance information and repetitions performed in clear 1 inch numbers. The two window displays measure in either one pound or one kilogram increments for single station units and 1/10 pound or 1/10 of a kilogram increments for the infinity series. All displays come with the Keiser eChip system standard. The eChip system is a simple to use electronic workout card that recalls previous workouts and settings and downloads the data easily into a personal computer without wiring or equipment.

  • Offers unilateral movement – each limb can be trained symmetrically
  • Increased resistance range for more intense functional workouts
  • Smooth Keiser Dynamic Variable Resistance
  • Fully adjustable to accommodate a wide range of users
  • Bilateral movement for body symmetry training
  • Large digital displays with resistance and counted repetitions

  • Height: 57” / 1448 mm
  • Width: 31” / 788 mm
  • Depth: 90” / 2286 mm
  • Weight: 166 lbs / 75 kg
  • Resistance Range: 0 - 860 lbs / 0 - 390 kg
  • Made in USA

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