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Fliiiight Smart Trainer


Silent. Portable. Zero Contact. Introducing the 4iiii Fliiiight Smart Trainer. With near silent operation and unparalleled ease of setup, the Fliiiight Smart Trainer raises the bike trainer bar for your next sweat-inducing session on your favourite training app.

Near Silence
The Fliiiight's magnetic eddy-current resistance unit doesn't touch your wheel, which means it doesn't make any noise. No noise means that the loudest noise you hear is your bike's drivetrain, letting you train when and where you want.
Zero Contact
The Fliiiight's resistance unit doesn't touch your wheel or tire, which means you don't have to replace your tire like a wheel-on trainer, and you don't have to remove your entire wheel like a direct-drive trainer. You get to use the exact same tire, tube, and cassette you use outdoors.
Virtual Inertia
The Fliiiight's resistance unit learns your pedal stroke and modulates instantaneous resistance continuously so that it feels like you're riding with a flywheel even though there is no mechanical connection to your wheel.
within ±1%
Power range
0 to 2200 Watts (@ 75km/h)
Maximum Slope
Cadence Range
40 - 160 RPM
Dimensions (Set Up)
L 552mm x W 741mm x H 450mm (21.7” x 29.2” x 17.7”)
Dimensions (Stored)
L 565mm x W 470mm x H 110mm (22.2” x 18.5” x 4.3”)
Total Weight
7.9kg (17.4lb)
Communication protocols
ANT+ FE-C, Bluetooth® FTMS
Supported training platforms
Windows PC (ANT+)
Mac OS (ANT+ or Bluetooth®)
iOS (Bluetooth)
Android (ANT+ or Bluetooth®)
Compatible Wheels
Aluminum alloy rims with a welded or aluminum sleeve joint. Use tool to confirm compatibility.
Wheel sizes
650C-700C or 26”-29”
Thru-axle compatibility
With thru-axle adapter. Find one from the Robert Axle Project
Wireless Riding Time
2-6 hours (can be wired during use)
Battery Type
Rechargeable lithium ion pouch cell, 3000mAh
Charging Cable
Type C USB, 5V 2A charging cable with anti-trip breakaway
Operating and Charging Temperature
5°C to 45°C (41°F to 114°F)
Storage Temperature
-20°C to 45°C (-4°F to 114°F)
Water Resistance
App features on iOS and Android
View real-time and historical data
Over-the-air firmware upgrade capability for adding new features and updates
Custom naming to easily pick out your trainer in a crowd
Battery status indicator
Setup and calibration
Diagnostics tools