Keiser M3i Total Body Trainer Cardio Machine 5512

  • $3,099.00
  • $2,295.99

Keiser M3i Total Body Trainer Cardio Machine 5512 


The M3i TBT came about because our athletic customers needed a bike with an upper body component that would hold up to the rigors of athletic performance. We designed a bike built on the sound platform of the proven M3i. The M3i Total Body Trainer is perfect for those seeking a full body workout, allowing them to train upper and lower body at the same time or independently, or even perform single limb rehabilitative movements. Keiser Integrated Technology allows the coach to monitor each athlete’s performance while on the bike in real time on a smartphone or tablet and retain the data to monitor progress.

Keiser M3 Series is a revolutionary line of cardio equipment balancing true performance, while focusing on power output (watts). The understanding of the resistance system on the Keiser M3 can best be described in the explanation of an eddy current and of the power formula: (P = F x V)

An eddy current is an electric current in a conducting material that results from induction by a moving or varying magnetic field. On Keiser M3 Series equipment this is generated by 2 opposing magnets passing over the flywheel. The flywheel (a conductor) passes through the magnetic field generated by the two powerful magnets. By varying how much of the flywheel comes into contact with the magnetic field you can increase or decrease the amount of resistance for the rider on the Keiser M3 Total Body Trainer. As no parts in the resistance system ever touch there is no wear on the system.

When the flywheel is turned in proximity of the magnetic field the eddy current is created. The Keiser M3's flywheel acts like a conductor with closed circuits. The energy generated by turning the flywheel has nowhere to go, so as it resists it becomes more difficult for the rider to pedal. If the flywheel is in less contact with the magnetic field it’s easier to ride. The more of the flywheel that comes in contact with the magnetic field (the higher the energy that is being generated with each turn) the more difficult it becomes to ride.

Speed Affects Resistance on the Keiser M3 Total Body Trainer. The faster the flywheel turns the more energy is being generated (the more resistance is being made) which directly relates to the formula for POWER.

Keiser M3 Series Cardio equipment effectively utilizes the POWER formula. Power (amount of work being done in a given amount of time by the rider) = Force (the amount of resistance) x Velocity (RPM, speed the rider is pedaling). This is the same formula all road bikes follow: pedal faster (increase velocity) and the harder it is to move as the wind resistance increases (increase in force) which requires more effort to pedal (increase in the amount of power).

Power is the component that sets performance equipment apart from just fitness equipment. Power is of value to all people from the older adult, to the professional athlete. In fact, Tour De France riders have adopted a mechanism to track the power output in their rides. It’s no longer about heart rate it’s about how much power is being generated by that rider.

The Keiser M3 differs from most other cardio equipment on the market because you are given the ability to fine tune the intensity of your workout. With other equipment, it's the usual story: the faster you move the easier it is to ride and the slower you move the harder it becomes as the equipment tries to keep up the resistance. With the Keiser M3 Series, your power output is truly yours.


•V-shaped frame to accommodate riders of all body shapes and sizes•Magnetic resistance for a smooth and quiet workout

•Infinite incremental resistance changes

Rear-wheel design for protection from sweat and corrosion

•Transport wheels for ease of transport•Self-tensioning, zero maintenance Poly-V Belt Drive for low maintenance and reliability

•Intuitive, simple to read console displaying Cadence, Power, Kcals, Heart Rate, Ride Time, Odometer, Trip Distance, and Gear, all on one screen

•Keiser Integrated Technology using Bluetooth connectivity to record and track progress using our M Series apps

•Robust adjustment knobs that require less maintenance than cam-locks•Four-way adjustable seat

•Stretch pads


HEIGHT: 54” / 1372 mm

WIDTH: 29” / 737 mm

DEPTH: 49” / 1245 mm

WEIGHT: 112 lbs / 51 kg



In 1996 Keiser set out to create a bike that would exceed the demands of Indoor Group Cycling Classes. The M3 Indoor Bike not only exceeded expectations, but changed Indoor Cycling Bikes forever by introducing many industry fi rsts including magnetic resistance, V-shaped frames and rear-fl ywheel design. All of our M Series Cardio Products are made to Keiser’s exacting standards to give you the fi nest in quality, service and performance. In addition, Keiser Integrated Technology uses Bluetooth® connectivity to record and track progress using our M Series Apps.

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