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KEISER - Where science and fitness meet

July 16, 2026 by
KEISER - Where science and fitness meet
ReformX, d.o.o., ReformX
Keiser is a sports brand that has established itself in markets all over the world. The company was founded in 1976 in the United States by Dennis Keiser, a former competitive cyclist and engineer. Their products, which include cardio and strength equipment, are extremely popular for their quality, durability and advanced features. Keiser's use of pneumatic resistance allows all exercises to be performed at high speed without negative consequences, which is a prerequisite for good strength training.

PNEUMATIC MODE OF ACTION
With pneumatic technology, muscles remain active throughout the full range of movement and speed, with reduced stress on muscles, connective tissues and joints. This allows us to safely improve physical performance.

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KOLO M3i
The M3i is considered the best-selling indoor bike in the world of elite sport. Their bikes are used in the world of elite sport, recreational sport, rehabilitation as well as exercise with the elderly. Keiser was the first to develop a bicycle that runs on magnetic resistance and provides quiet and highly precise operation. The bike has Bluetooth connectivity, allowing compatibility with the most popular exercise apps such as Zwift and similar.

KEISER FUNCTIONAL TRAINER
The Keiser Functional Trainer is the core product of the Infinity series. As the name suggests, it is a multifunctional trainer for a complete exercise routine. It can be used for hundreds of different exercises, from rehabilitation to sports applications, and is one of the most basic and versatile pneumatic trainers in the world. The FT trainer allows you to train at any speed, as it is not like other so called "cable" trainers, where the force of the weight pulls the arm or body backwards in the final pulling or pushing phase. With its space-saving design, it is a tool that replaces a whole range of trainers and provides the user with a safe and measurable workout. Imagine being able to measure the force for each push, pull or tug, thus balancing the abilities of the left and right halves of the body and consequently achieving symmetry that contributes to your progress and optimal body movement. The trainer allows full control of resistance levels. The pneumatic resistance provided by the compressor (optional) ensures even resistance throughout the entire pull, push or sprint, thus reducing the pressure on connective tissues and joints.

DURABILITY AND SUSTAINABILITY
All of their products are made in the USA from the finest materials, and they are constantly looking for new ways to reduce their environmental impact and waste.

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