Garmin Tacx Flux S Smart Trainer


  • Smart direct drive trainer
  • Compatible with your favorite cycling apps including Zwift and Tacx
  • Accurate metrics delivered
  • one of the most silent flywheel-equipped bike trainers available
  • Simulated inclines up to 10% gradients
  • Durable, stable, and versatile – ride full on or even while standing on the pedals


Looking for a smart direct-drive trainer? FLUX S Smart is the ideal indoor training companion — made to help you sweat while cycling with your favorite apps.

The well-balanced design and large footprint of the FLUX S Smart trainer ensures maximum stability, even during the most explosive sprints, up to 1,500 watts.

Get the most out of your intense workouts by training on realistically simulated inclines up to a 10% gradient.

Keep track of your performance and progress with reliable, consistent measurements. That includes power, speed and cadence, measured accurately within 3%.

At 15.4 lbs (7.0 kg), a heavy flywheel ensures a realistic ride feel and good responsiveness.

This direct-drive trainer is designed to bring vibration and noise levels to the absolute minimum, resulting in one of the most silent flywheel-equipped bike trainers available.

The FLUX S Smart trainer communicates via BLUETOOTH® Smart technology and ANT+® FE-C protocol, so it works with a number of popular training apps such as TrainerRoad and Zwift. You can opt to use the trainer in stand-alone mode. When not connected, it will simulate a flat road; the faster you ride, the higher the resistance.


Physical dimensions 26.4" x 25.3" (670 x 642 mm)
Weight 50.3 lbs (22.8 kg)
Height 18.1" (460 mm)


Wireless communication: ANT+ connectivity, BLUETOOTH wireless technology
Control by Smartphone, tablet, ANT+ bike computers, stand alone, computer connection via ANT+ antenna Read out on Smartphone, tablet, bike computer, computer with ANT+ antenna

Indoor Training Features

Magnets 8 permanent ferrite magnets and 8 electromagnets
Electrical requirement 110-240 V

Suitable cassettes

Shimano and SRAM: 8-11 speed. Campagnolo, SRAM XD and XD-R body (sold separately). Not suitable for specialized SCS system.

Suitable axles

Width of rear fork: Race 130 mm, MTB 135 mm. Adapters for other widths available.
Max power 1500 watt
Max incline 10%
Max torque 22.1 Nm
Max brake force 65N
Flywheel 15.4 lbs (7 kg)
Mass inertia 50.3 lbs (22.8 kg)
Calibration Spin down
Output Speed, cadence, power
Accuracy <3%

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