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Tacx Flux S Smart Trainer

$5 freight fee for all deliveries except Bikes.

The FLUX is a compact and realistic interactive direct drive and is maintenance-free. The swift response of the Smart electronics and the 7kg flywheel transmit the slightest fluctuations in resistance directly and accurately to your legs.

Two Technologies Combined

With the FLUX we combined direct drive technology with an electro brake in order to offer an accessible Smart and interactive direct drive. The Flux is also extremely quiet with automated calibration to make the user experience as pleasant as possible.


Flux Smart trainer, power cord.


The Flux trainer seamlessly pairs with the most popular training apps and software (including Zwift, TrainerRoad, Tacx) to create the ultimate indoor training tool.


The Flux has a 7kg flywheel which is the heaviest flywheel on a Tacx trainer, the heavier flywheel allows the most comprehensive simulation of a pedal stroke.


The Flux trainer has a 670mm x 650mm footprint and is made to take the forces of the most powerful cyclist. You will be able to stamp on your pedals as hard as you can to climb that hill or catch the cyclist in front of you.


Tacx Smart trainers use the Bluetooth Smart and ANT+ FE-C protocol for communication which allows them to be controlled by third-party software. The software receives the speed, cadence and power from the trainer and controls the brake



Type of trainer - Interactive Smart direct drive with electric brake

Magnets - 8 Permanent ferrite magnets & 8 electromagnets

Transmission - None

Electrical requirements - 110-240 Volt

Power indicator - None

Connection indicator (ANT/BT) - 2 LEDs

Firmware upgradable  - Yes

Suitable cassettes - Various Shimano, SRAM & Campagnolo cassettes

Suitable axles - Width of rear fork: Race 130 mm, MTB 135 mm. Adapters for other widths available

Suitable bikes - Race, Tri & MTB , Not suitable for a long cage rear derailleur

Supplied with - Quick release for road bikes and mountain bikes (5mm)


Max. power - (40 km/h) 1500 Watt

Max. incline - 10%

Simulation of descent - No

Max. torque - 22.1 Nm

Max. brake force - 65 N

Flywheel Actual - of 7 kg

Mass inertia - 22.8kg (50.3 lbs)

Calibration - Spin down

Footprint (lxw) - 670 × 650 mm (26.4 × 25.6 in)

Height - 465 mm (18.3 in)

Dimensions when folded - Not foldable

Weight - 16 kg (35.3 lbs)

Article number - T2900


Wireless communication - ANT+ FE-C , Bluetooth Smart open

Control by - Smartphone , Tablet , ANT+FE-C bike computers , Stand alone , Connect to computer via ANT+antenna

Output - Speed , Cadence , Power

Read out - on Smartphone , Tablet , Bike computer , Sports watch , Computer with ANT+ antenna

Accuracy - <3%


With decades of experience offering quality bikes and service, you can rest assured we have deeply considered the quality of the products we sell and have the technical skills to assist you.

We genuinely want our riders to love their cycling and to achieve this we focus on ensuring our riders purchase the bike they truly need and want and fits their riding purpose.

We also genuinely want to look after our riders post purchase - its a duty of care that we take seriously.

Lastly, we are riders ourselves. We are in this business because we are genuinely passionate about riding all types of bikes and are here to share our knowledge to help enhance your riding experience.

Why buy from us