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Garmin Tacx® Flux S, Smart and Silent Bike Trainer
The FLUX S Smart checks all the boxes when you are looking for a Smart direct drive trainer. Reliable, accurate, silent, strong with a good ride feel.
Free shipping over $35
Final Sale: No returns or exchanges
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Features

Precision
Measures your power accurately within 3,0%
Quiet
The most silent flywheel equipped bike trainer available.
Connectivity
Connect to popular training apps, like Zwift & Tacx.
Power
Realistically simulate inclines up to a 10% gradient. 1500W
Weight
A large 7,0 kg flywheel ensures the best ride feel.
Product Customer Reviews

Sync’d with ROUVY instantly. Happy training!
Hi Mike,
Thank you for taking the time to leave a review of Bike Trainer. We're thrilled to hear that you're enjoying the experience and finding it to be a helpful tool for your training.
At Decathlon, we're passionate about providing our users with the best possible experience, and we're constantly working to improve our product to meet your needs. We're delighted that our efforts have been successful in your case and that you're finding value in our product.
Thanks again for your kind words, and happy training!
Sportingly,
Pankaj
Very good machine. Easy to setup. Dependable. Low noise. Excellent cost to performance.
Hi Frank,
Thank you for taking the time to review our Flux S Smart home trainer.
We are very happy to hear that it met your needs and expectations and we hope you have the best training sessions to prepare for the spring!
Sincerely,
L'équipe Décathlon Ottawa
The Ottawa Decathlon team
Additional Product Information
Composition
Smart trainer
The Flux S smart trainer pairs seamlessly with most popular training apps and software to create the ultimate indoor training environment. Easily connect to cycling apps like Zwift, Tacx, TrainerRoad and Sufferfest.
Accurate and reliable
A reliable, accurent and consistent power measurement is key to keep track of your performance and progress. This is exactly what Flux S Smart is designed for, it measures your power accuretely within 3%.
Smooth ride feel
A smooth ride feel and swift responsiveness are key to replicate the experience of your indoor rides. With its large flywheel , the FLUX S ensures the same sensation of riding the road.
Extremely silent
The Flux S Smart is designed to bring vibrations and noise levels to the absolute minimum. This resulted in a very silent flywheel equipped trainer.
Stand alone
The smart electronics of this bike trainer allow you to train stand alone, without any software. It follows a progressive power curve, the resistance will increase progressively when you ride faster. Precisely replicating riding on a flat road.
Connection indicators
Intuitive LED lights provide a visual confirmation when the trainer is powered and connected to a device over ANT+ or bluetooth.
Stable frame
Designed to withstand the most intense training sessions, this bike trainer is built to last. A large footprint ensures maximum stability and durable material give the quality you would expect.
Your favorite apps
Train with your favorite cycling software like Zwift, TrainerRoad and Sufferfest. It is easily connected and controlled by most popular training apps. Race online in the virtual worlds of Zwift, achieve your cycling goals with the training plans of TrainerRoad, or anything else.
Features
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 Not suitable for Specialized SCS system , Shimano & SRAM: 8 - 11 speed. Campagnolo, SRAM XD and XD-R body sold separately Suitable axles Width of rear fork: Race 130 mm, MTB 135 mm. Adapters for other widths available Suit
Specifications
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 x 642 mm (26.4 x 25.3 in) Height 460 mm (18.1 in) Dimensions when folded Not foldable Weight 21.3kg (46.9lbs) Article number T2900S
Data output and control
Wireless communication ANT+ FE-C , Bluetooth Smart open Control by ANT+FE-C bike computers , Connect to computer via ANT+antenna , Smartphone , Stand alone , Tablet Output Cadence , Power , Speed Read out on Bike computer , Computer with ANT+ antenna , Smartphone , Sports watch , Tablet Accuracy <3%
Origin
Imported
Superior quality. Unbeatable prices.
For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.
Decathlon makes the difference
-
Research and development
delivers high-quality cost-effective products
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State-of-the-art production processes
minimize manufacturing costs
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Optimized supply chain
reduces retail prices
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Minimal retail footprint
lowers overhead and indirect costs

Garmin Tacx® Flux S, Smart and Silent Bike Trainer
Your location: City, ST
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Heavy products return policy
If you return a product you will receive a refund for the purchase price plus any applicable sales taxes, less any non-refundable charges.
Decathlon will cover all shipping costs associated with your return except for items excluded from our return policy such as bikes, basketball hoops, snowboards, surfboards, tents, and other larger / heavier items.
Return costs for heavy products:
Weight Thresholds | Shipping within California | Shipping outside of California |
---|---|---|
> 9 lbs | $20.00 | $25.00 |
> 30 lbs | $50.00 | $65.00 |
> 100 lbs | $100.00 | $125.00 |
> 200 lbs | $200.00 | $230.00 |
If you return a product at any of our store locations, we will gladly help you find the best alternative product or refund you on the spot.
