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Garmin Tacx FLUX S, angled from the cassette side
Garmin Tacx FLUX S, flywheel side
Garmin Tacx FLUX S, front view of the frame
Garmin Tacx FLUX S, side view
Garmin Tacx FLUX S, top-down view with power cable
Garmin Tacx FLUX S, angled from the cassette side
Garmin Tacx FLUX S, flywheel side
Garmin Tacx FLUX S, front view of the frame
Garmin Tacx FLUX S, side view
Garmin Tacx FLUX S, top-down view with power cable

Garmin Tacx FLUX S Smart Bike Trainer

by Garmin
Sold out
$549.99 - $549.99
$549.99
$549.99
$549.99 - $549.99
$549.99

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Sweat through your favorite apps

Garmin Tacx FLUX S Smart Bike Trainer

The Garmin Tacx FLUX S Smart Bike Trainer is a direct-drive bike trainer built for sweating through your favorite apps, from Zwift to Tacx. A 15.4 lb (7.0 kg) flywheel gives the ride a road-like feel, and the trainer stays extra quiet. Bluetooth and ANT+ FE-C connections bring in Zwift, TrainerRoad and the Tacx Training app. A cassette is not included, and the trainer takes Shimano and SRAM 9 to 11 speed cassettes. Ride full out or standing on the pedals through sprints up to 1,500 watts and simulated inclines of 10%, with power readings within 3%.

The Tacx FLUX S Smart checks all the boxes when you are looking for a Smart direct drive trainer. The FLUX S is reliable, accurate, silent, strong, and offers an amazing ride feel. The FLUX S Smart Trainer is compatible with popular training apps, including Zwift and Tacx. A few key features of the Tacx FLUX S are 1500 watts max sprint resistance, 10% gradient simulation, and power measurements accurate up to 3%. Pick up the Tacx FLUX S Bike Trainer today and never need an excuse to skip a ride.

MAX POWER
1,500 W
sprint resistance
INCLINE
10%
simulated gradient
ACCURACY
Within 3%
power measurement
FLYWHEEL
15.4 lbs
7.0 kg
Quick release and thru axle Spin-down calibration Zwift, TrainerRoad and Tacx
Garmin Tacx FLUX S, direct-drive trainer with its flywheel

What you get on the trainer

How it works

App connection
The FLUX S Smart pairs with most popular training apps and software, and it connects easily to cycling apps like Zwift, Tacx and TrainerRoad.
Power accuracy
A reliable, consistent power measurement keeps your progress honest. The FLUX S Smart measures your power accurately within 3.0%.
Ride feel
A smooth ride feel and swift responsiveness replicate the experience of your outdoor rides. With its large flywheel, the FLUX S gives the same sensation of riding on the road.
Quiet operation
The FLUX S Smart brings vibrations and noise levels to the absolute minimum, which makes it a very silent flywheel-equipped bike trainer.

Made for steady indoor miles

Key features

Sprint ceiling
Maximum resistance of 1500 watts
Simulation range
Realistic inclines up to a 10% gradient
Stand-alone mode
Resistance rises as you ride faster
Indicator LEDs
Show when the trainer is powered and linked
Stable footprint
A large base for the hardest sessions
Device compatibility
Connect with phones, tablets and computers
Tacx video library
More than 100 real-life videos with Tacx Premium
Training plans
Structured plans from Tacx Training

Setting up the FLUX S

How to use it

Garmin Tacx FLUX S, trainer body with flywheel housing
Flywheel

A heavy flywheel for road feel

The flywheel carries mass inertia of 50.3 lbs (22.8 kg), which helps the FLUX S reproduce the sensation of riding on the road. It is backed by 22.1 Nm of maximum torque and 65 N of brake force through hard sprints, and the trainer stays extra quiet while you do it.

  • Spin-down calibration
  • Extra quiet running
Garmin Tacx FLUX S, trainer body with its power cable
Set up

Plug in and mount up

Plug the FLUX S into a 110-240 V supply, then mount your bike on the quick release or the thru-axle end caps that match its axle. Then pair it with your app.

  • Quick release 130 and 135 x 5 mm
  • Thru-axle end caps 142 and 148 x 12 mm

Watch the FLUX S

Videos

The Tacx lineup

How it compares

Garmin Tacx NEO 3M, direct-drive smart trainer
Garmin Tacx NEO 3M Smart Trainer
Direct-drive smart trainer with built-in motion plates.
Up to 2,200 W Up to 25% incline Within 1% accuracy
Shop the NEO 3M
Garmin Tacx NEO 2T, direct-drive smart trainer
Garmin Tacx NEO 2T Smart Bike Trainer
Direct-drive smart trainer with left/right power balance.
Up to 2,200 W Up to 25% incline Within 1% accuracy
Shop the NEO 2T
Garmin Tacx FLUX 2, direct-drive smart trainer
Garmin Tacx FLUX 2 Smart Bike Trainer
Direct-drive smart trainer with a 7.6 kg flywheel.
Up to 2,000 W Up to 16% incline Within 2.5% accuracy
Shop the FLUX 2
You're Here
Garmin Tacx FLUX S, direct-drive smart trainer
Garmin Tacx FLUX S Smart Bike Trainer
Direct-drive smart trainer with a 7.0 kg flywheel.
Up to 1,500 W Up to 10% incline Within 3% accuracy
Currently viewing

FLUX S

Frequently asked questions

The FLUX S trainer, a 5 mm quick release for road and mountain bikes, axle end caps for 142 x 12 mm and 148 x 12 mm thru axles, and a 1-month Tacx Premium subscription.
No, so add your own Shimano or SRAM 9 to 11 speed cassette. Shimano 12-speed Hyperglide+ fits as well, while Campagnolo and SRAM XD or XDR cassettes need a separately sold body, and the Specialized SCS system does not fit.
Quick release axles of 130 and 135 mm and thru axles of 142 and 148 mm. A 135 mm Thru-Axle Adapter Set is available as an accessory.
Zwift, TrainerRoad and the Tacx Training app connect over Bluetooth and ANT+ FE-C. Control it from a smartphone, tablet, ANT+ bike computer or a computer with an ANT+ antenna.
Sprints go up to 1,500 watts, with 22.1 Nm of maximum torque and 65 N of brake force.
It measures 26.4 x 25.3 in. (670 x 642 mm) across and 18.1 in. (460 mm) high, and it weighs 50.3 lbs (22.8 kg).
Yes. In stand-alone mode it follows a progressive power curve, so resistance rises as you ride faster, like a flat road.
Power is measured within 3%, and you calibrate with a spin down.
Garmin backs it with a one-year limited warranty from the date of purchase against defects in materials or workmanship, and Garmin repairs or replaces defective components.
  • Type of trainer: Interactive smart direct drive with electric brake
  • Magnets: 8 permanent ferrite magnets and 8 electromagnets
  • Transmission: None
  • Electrical requirements: 110-240 Volt
  • Connection indicator (ANT/BT): 2 LEDs
  • Firmware upgradable: Yes
  • Suitable cassettes: Shimano/SRAM 9 to 11 speed; Campagnolo (requires separately sold Campagnolo body); SRAM XD and XDR body (sold separately); Shimano 12-speed Hyperglide+; not suitable for Specialized SCS system; cassette not included
  • Suitable axles: Quick release 130 mm/135 mm x 5 mm; thru-axle end caps 142 mm/148 mm x 12 mm; 135 mm Thru-Axle Adapter Set available as an additional accessory
  • Suitable bikes: Race, tri and MTB
  • 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: 15.4 lbs (7 kg)
  • Mass inertia: 50.3 lbs (22.8 kg)
  • Calibration: Spin down
  • Footprint (l x w): 670 x 642 mm (26.4 x 25.3 in.)
  • Height: 460 mm (18.1 in.)
  • Weight: 50.3 lbs (22.8 kg)
  • Article number: T2900S
  • 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%
  • Smart: The FLUX S Smart pairs with most popular training apps and software; easily connect to cycling apps like Zwift, Tacx and TrainerRoad
  • Accurate: A reliable, consistent power measurement is key to keeping track of your performance and progress; the FLUX S Smart measures your power accurately within 3.0%
  • Ride feel: A smooth ride feel and swift responsiveness replicate the experience of your outdoor rides; with its large flywheel, the FLUX S gives the same sensation of riding on the road
  • Silent: Brings vibrations and noise levels to the absolute minimum, for one of the most silent flywheel-equipped bike trainers available
  • Smart trainer: Connect to popular training apps, like Zwift and Tacx
  • Simulation range: Realistically simulate inclines up to a 10% gradient
  • Sprint: A strong trainer with a maximum sprint resistance of 1500 watts
  • Heavy flywheel: A large 7.0 kg flywheel gives the best ride feel
  • Stand alone: The smart electronics let you train stand-alone, without any software, following a progressive power curve where resistance increases progressively as you ride faster, replicating riding on a flat road
  • Indicators: Intuitive LED lights provide a visual confirmation when the trainer is powered and connected to a device over ANT+ or Bluetooth
  • Stable: Built to withstand the most intense training sessions, with a large footprint for maximum stability and durable materials for the quality you would expect
  • Tacx software: Explore the world with high quality films (with Tacx Premium) and GPS workouts while challenging your friends, train with structured training plans and cycling workouts, and export your activity to Strava
  • Tacx subscription: All Tacx smart trainers come with a free month subscription to the Tacx Premium software
  • FLUX S Smart Trainer
  • Quick release for road bikes and mountain bikes (5 mm)
  • Axle end caps for use with 142 x 12 mm and 148 x 12 mm thru axles
  • 1-month Tacx Premium subscription



Overall rating: 4.75 / 5 from 4 reviews.

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Review highlights

Reviews

Works well

"Actually 2nd one of these after burning one out with training for 2 Ironmans and 10 half Ironmans. Good value and performs well"

— William H. (5/5)

Tacx is awesome!

"Love it! It's great!"

— Ed L. (5/5)

Trying to get back my youth.

"I'm looking forward each day to my workout. At seventy two years of age, i'm planning on a three hundred mile trip with another friend."

— Andrew I. (4/5)

I love it!

"Living in t he Florida summer heat makes it unbearable to ride outdoors. The Flux S allows me to stay in shape without the suffering caused by the heat. And the routs I can choose to simulate when I connect to Bkool make riding indoors enjoyable!"

— DONALD B. (5/5)

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