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C-21 Bluetooth Exercise Bike

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The adidas C-21 exercise bike comes fully equipped to help build cardio endurance and target lower body muscles without causing impact strain on sensitive joints. Featuring a solid 9 kg / 20 lb flywheel, 24 levels of electronic resistance and 12 varied fitness programmes, plus 4 user programmes, the C-21 is ideal for steady-state and interval training, with the functionality for sprint and high-resistance workouts.

Featuring an intuitive console with a clear liquid crystal display, the C-21 gives you all the control you need over your workout. With live performance feedback, including capturing rider performance via the hand pulse sensors, you can easily keep track of speed, time, distance, calories, pulse, watts, RPM and resistance over the course of your session.

Complete with tablet holder, built-in speakers and Bluetooth connectivity, the C-21 links to your phone or tablet, allowing you to power through workouts while listening to your favourite tracks or watching the latest movies and boxsets. Further enhance your training regime by syncing the C-21 with Zwift, an immersive online experience built around a connected global community of cyclists. Also compatible with Kinomap, take part in a whole host of challenges and scenic motion videos or even compete with your friends in multiplayer mode.

Fitted with a wide, densely padded and fully adjustable saddle, the C-21 gives you free-reign over your riding position, promoting better form, reducing irritation and maximising comfort. The all-important water bottle holder is within easy reach and means you can stay hydrated as you clock up the miles.


  • 12 fitness programmes + 4 custom workouts offer a variety of challenges to keep you motivated
  • 24 levels of electronic resistance allow you to tailor the intensity of your ride
  • 9 kg / 20 lb flywheel creates a smooth cycling motion for consistent cadence
  • Built-in transport wheels and grip bar make it easier to move the bike around your home
  • Console feedback includes: speed, time, distance, calories, pulse, watts, rpm and resistance
  • Floor level adjustment ensures the bike is stable for a better riding experience
  • High grip pedals with adjustable straps provide further comfort when riding
  • Integrated hand pulse sensors measure and feedback your pulse
  • Integrated speakers with Bluetooth connectivity - workout to your favourite tracks and movies
  • Intuitive console with clear LCD screen gives you complete control over your workout
  • Saddle height ranges from 67 cm - 92 cm / 26.3" - 36.2" to suit all rider heights
  • Setup dimensions: (L) 107 x (W) 57 x (H) 147 cm / (L) 42.1" x (W) 22.4" x (H) 57.8"
  • Signature adidas Ultra Series red LED lighting
  • Solid, dependable build quality results in a high maximum user weight of 150 kg / 330 lb
  • Tablet and phone holder built into the console provides optimum viewing angle
  • Water bottle holder within easy reach to help keep you hydrated during exercise
  • Wide, densely padded comfort saddle with vertical and horizontal seat adjustment
  • Zwift compatible - immersive cycling experience connects you with cyclists across the globe
  • Kinomap compatible – cycle real-world routes, challenge your friends and analyse workouts
  • adidas Console+ - access training apps, take-on workouts, and analyse your data