The Keiser M3i Total Body Trainer is the newest innovation in the Keiser M Series Cardio Line, combining the smooth, whisper-quiet magnetic resistance system of the Keiser M3i Indoor Cycle with the versatility of a full-body trainer. Designed for those who want to engage both the upper and lower body, or isolate each independently—this machine delivers a highly effective, low-impact workout for all fitness levels. Developed through over a decade of research and real-world feedback from elite trainers and top fitness clubs, the M3i Total Body Trainer offers exceptional durability, cutting-edge performance tracking, and unmatched ride smoothness. Its corrosion-resistant frame, wear-free resistance system, and virtually maintenance-free operation make it an ideal choice for both home and commercial use.
Key Features & Benefits:
- Full-body or Isolated Training – Engage both arms and legs together or target upper or lower body separately.
- Award-winning M Series Technology – Same proven design and ride feel as the Keiser M3i Indoor Cycle.
- Eddy Current Magnetic Resistance – Smooth, precise, and contact-free system that never wears out.
- Advanced Console with Power Meter – Tracks watts, RPM, heart rate, and more for performance-driven training.
- Bluetooth Connectivity – Sync with popular fitness apps and wireless heart rate monitors.
- Ultra-Durable Build – Corrosion-resistant materials and minimal maintenance requirements.
- Whisper-Quiet Operation – Perfect for early mornings, shared spaces, or noise-sensitive environments.
The Science Behind Eddy Current Resistance:
Keiser's eddy current system uses two powerful magnets positioned near the flywheel. As the flywheel spins through the magnetic field, it generates resistance without physical contact—resulting in zero wear on parts and a consistently smooth ride. Resistance increases naturally with speed, mirroring the physics of outdoor cycling, and you can adjust it precisely to match your training goals.
Why Power Matters:
Unlike traditional cardio equipment where resistance is tied to speed, the M3i lets you fine-tune intensity for optimal power output. Power (watts) = Force × Velocity, meaning the harder you push and the faster you pedal, the more work you produce. This metric-driven approach benefits everyone—from older adults improving functional strength to elite athletes chasing performance gains.
Details:
- Drive System: Belt drive with magnetic resistance
- Resistance Type: Eddy Current Magnetic
- Console: Backlit display with power meter and Bluetooth®
- Training Modes: Full body, upper body only, or lower body only
- Frame: Corrosion-resistant, commercial-grade construction
- Maintenance: Virtually maintenance-free
Perfect For:
- Home users wanting versatile, total-body cardio in one compact machine
- Commercial facilities seeking durable, low-maintenance performance equipment
- Athletes training with precision metrics like watts, cadence, and power zones
Features:
- 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.
- Four-way adjustable seat
- Stretch pads
Equipment Configurator
See Your Colors on Our Cardio Machines
Visualize your ultimate Keiser machine. The Keiser Equipment Configurator lets you see your favorite Keiser machines in your chosen colors and with your selected accessories.
- Choose your colors to match your brand or team colors.
- Choose accessories.
Accessories - Standard
Stretch Pads
Stretch pads provide a convenient place for pre- and post-ride stretching and are standard on the M3i and M5i.
Keiser M Series App
Easily track and record your rides with real-time graphs for power and cadence range dials. More advanced users can test and track functional threshold power (FTP) directly in the app. The Keiser M Series Cycling app is available for Apple® or Android™ devices via the App Store® or Google Play™.
Keiser M Series Group App
With the Keiser M Series Group app, featuring functional threshold power (FTP) training, indoor cycling instructors can enhance their teaching to easily transform classes into fun, fiery competitions that inspire riders and keep them coming back for more.
Accessories - Optional
Floor Mat
Place the floor mat under your Keiser M Series Cardio machine to protect your floor from sweat! Measures 65" x 32".
Polar H9 Heart Rate Monitor
Reach your fitness goals by monitoring your heart rate with the Polar heart rate monitor! Transmits your heart rate data wirelessly to any M Series Cardio machine.
Components
Paint / Upholstery
Keiser offers numerous options to customize your equipment. With upholstery color and frame painting options, you can finally get the machine that suits your facility's needs or personal tastes. Most custom orders require lead time. Please contact us for more information.
| Height | 54” / 1372 mm |
| Width | 29” / 737 mm |
| Depth | 49” / 1245 mm |
| Weight | 112 lbs / 51 kg |
Keiser M Series Cardio Warranty
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All Inclusive (excluding labor and wearable parts)
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3 Years
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Wearable Parts: "T" Handles, Pedal Cage, Pedal Strap, & Saddle Upholstery
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90 Days
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Move or
Haul Away
We'll move your fitness equipment to a new location or dispose of old equipment for you.
Available
Installation
360 Fitness Superstore offers multiple installation and service options on all our fitness equipment.
Home
Gym Design
Design your home or office gym with the Home Gym Design Room Layout Planner!
Equipment
Service & Repairs
We offer the best repair service in the San Francisco Bay Area with a 24-hour response time.
