Garmin Tacx Flux 2

Yes, the trainer does not come with a cassette included. You will need to purchase and install a compatible Shimano or SRAM cassette that matches the drivetrain of your bicycle.

The Flux 2 is highly versatile and includes adapters for 142x12mm and 148x12mm thru-axles, as well as standard 130mm and 135mm quick-release skewers. It covers the vast majority of modern road and mountain bike setups.

The 16.8-pound flywheel provides significant inertia, which helps mimic the sensation of coasting and accelerating on the road. While no indoor trainer perfectly replicates the wind and road surface, this unit offers one of the smoother, more natural ride feels in its class.

While the Flux 2 is generally stable, it does require periodic calibration to ensure the power readings remain within the 2.5% accuracy range. You can easily perform a spin-down calibration using the Tacx Utility app.

Absolutely. The Flux 2 uses standard ANT+ and Bluetooth protocols, making it fully compatible with all major indoor cycling platforms like Zwift, TrainerRoad, and Rouvy for interactive resistance control.

It is designed to be very quiet, but it is not silent. You will hear the sound of your drivetrain and the whir of the flywheel, so using a rubber trainer mat underneath is recommended to dampen vibrations and protect your floor.