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Description
Keiser M3i Indoor Bike with Bluetooth®
The Keiser M3i is the gold standard in indoor cycling—engineered, tested, and assembled in the USA with a perfect balance of performance, durability, and innovation. Designed to fit riders from 4’10” to 7’ tall (up to 350 lbs), its V-shaped frame mimics outdoor geometry and allows infinite adjustability for a true road-bike feel. Whether you’re training at home or in a commercial facility, the M3i delivers a whisper-quiet, low-maintenance ride thanks to its magnetic resistance system, rear-wheel design, and Poly-V® belt drive.
The M Connect Display connects instantly via Bluetooth® to your favorite cycling apps—no additional sensors or devices needed—streaming data like power, cadence, speed, and heart rate. With open API connectivity, you can pair it with multiple devices at once for personal tracking, group projection systems, or virtual cycling platforms.
Over a decade of refinement has made the M3i the first indoor cycling bike to pass EN957-10 certification for power accuracy, safety, and environmental standards. From its corrosion-resistant frame to its revolutionary pedal design, every detail is built for performance and longevity.
Key Features & Benefits:
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V-shaped frame – Fits a wide range of riders while replicating outdoor cycling geometry.
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Magnetic resistance – Smooth, silent, and virtually maintenance-free.
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Infinite incremental adjustments – Fine-tune your ride intensity instantly.
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Rear-wheel design – Protects the flywheel from sweat and corrosion.
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Poly-V® belt drive – Self-tensioning, zero-maintenance system for long-term reliability.
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Revolutionary Keiser Bike Pedal – Dual-sided for SPD® cleats or standard athletic shoes.
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Four-way adjustable seat & handlebars – Perfect fit for every rider.
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M Connect Display with Bluetooth® – Pairs with popular cycling apps and wearables.
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Intuitive single-screen console – Displays cadence, power, calories, heart rate, ride time, distance, and gear.
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Integrated accessories – Media tray, water bottle holder, and stretch pads.
Details:
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Resistance Type: Magnetic
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Drive System: Poly-V® belt drive
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Connectivity: Bluetooth® (open API)
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Certification: EN957-10 power accuracy and safety
Perfect For:
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Indoor cycling studios and group classes
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Home gyms seeking commercial-grade quality
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Riders using apps like Zwift®, Peloton® (app), TrainerRoad®, and The Sufferfest®
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Athletes training with power metrics for performance improvement