Keiser A300 LEG EXTENSION PRO Model 1133

KeiserSKU: 001133BP


*Product ships in 1-2 Days and delivers in 5-7 Days


This Leg Extension Pro is the best to demonstrate the superiority of Keiser Dynamic Variable Resistance over Iron. The quadriceps is one of the most powerful muscle groups in the body, producing very high forces at very fast speeds. The knee is vulnerable to injury at high degrees of flexion, which is why we lower the resistance at the beginning of the ROM and bring it on heavy in the middle before backing it off at full extension. This, along with your ability to work each leg independently at speed, maximizes your training results while protecting your joints and connective tissue. And remember, you can do heavy negatives on all Keiser Dynamic Variable Resistance machines.


  • HEIGHT45” / 1143 mm
  • WIDTH39” / 991 mm
  • DEPTH40” / 1016 mm
  • WEIGHT150 lbs / 68 kg
  • RESISTANCE RANGE0 - 236 lbs / 0 - 107 kg


  • 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

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