The Tacx Flux S Smart is a direct-drive smart trainer designed for serious cyclists who want accuracy, realism, and reliability in their indoor training. Equipped with a heavy 6.8 kg (15 lb) flywheel and electromagnetic brake, it delivers a smooth, responsive road feel and realistic gradient simulation up to 10%.
With a maximum resistance of 1500 W and power accuracy within ±3%, the Flux S Smart ensures precise data tracking for structured workouts and virtual rides. Its stable, compact frame minimizes vibration and noise, while full Bluetooth and ANT+ FE-C support guarantee seamless compatibility with training apps like Zwift, TrainerRoad, and Tacx Training.

Key Specifications

• Type: Direct-drive smart trainer (electromagnetic brake)

• Max resistance: 1500 W

• Power accuracy: ±3%

• Max incline simulation: 10%

• Flywheel weight: 6.8 kg / 15 lb

• Connectivity: Bluetooth Smart & ANT+ FE-C

• Compatibility: Road and MTB (QR & 12 mm thru-axles)

• Cassette compatibility: Shimano/SRAM 8–12 speed (XD/XDR freehub sold separately)

• Max rider weight: 125 kg

Included Parts

• Shimano/SRAM compatible freehub body

• Quick-release skewer (5 mm)

• Thru-axle adapters 142 × 12 mm and 148 × 12 mm

• Power cable and setup guide