Garmin Tacx FLUX S Smart Trainer
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Reliable, silent and featuring a heavy flywheel for a realistic ride feel, the Garmin Tacx FLUX S trainer is a smart, direct-drive trainer that helps you feel the burn during indoor cycling workouts.
Shop similar products- Train with realistically simulated inclines up to a 10% gradient and a maximum sprint resistance of 1,500 watts
- 7kg flywheel replicates the experience of outdoor rides
- Next-to-silent direct-drive design lets you ride without disturbing others
- Sturdy design easily allows for riding full-out and standing on the pedals
- Measure your power within 3% accuracy
- Works with popular third-party training apps such as Zwift and Tacx®
- Features full cycling app compatibility
- Cassette not included
Imported.
View the Garmin Tacx Product LineView all Garmin Bike Resistance Trainers| Best Use | Indoor Cycling |
|---|---|
| Resistance Type | Flywheel |
| Dimensions | 26.4 x 25.3 x 18.1 inches |
| Software Controlled | Yes |
| Weight | 50 lbs. 4.8 oz. |
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Most Helpful Critical Review
Not happy with the trainer.
This is my first smart trainer, and like many this past year, I recently got into cycling. I was excited to be able to ride and train in the winter especially, but this thing has been a constant headache. I try to use it with Zwift, but have connection issues about 20-30% of the time I try to ride. I have tried both bluetooth and ANT connections, and neither are better for me, despite what some of the forums suggest. I have Favero Assioma power meters, and my FLUX S has always been 10-20% high in watt readout, despite calibration and firmware updates. Look elsewhere if you want to find a smart trainer that will be easy to use and fun to train with.
Works Perfectly Well
I’ve had my Flux S for a year, done 3000km on Zwift and it still works great. I calibrate it once every couple of weeks, keep in a room that doesn’t get cold or damp, dust it down weekly, keep the rear vents clear with compressed air once a month and dismount, reassemble and tighten every 3 months. It only simulates to 10% gradient, so if you’re a serious roadie looking for a perfect simulation over the winter, you would be better with something more expensive (Tacx neo or Kickr) as they will simulate up to 15-18%. It also comes with spacers, so you can load on a 8-11 speed cassette so it matches up with whatever your bike has.
Annoying reverberations
This is overall an okay trainer, but when using it at medium intensity there is a resonant frequency that causes my bike to rattle, and annoys my downstairs neighbors. I have to amp it up and maintain a higher than comfortable cadence to get it to stop. I have been through countless conversations and videos with Tacx support, and at one point they sent a replacement, but the replacement was far more defective than my unit and was producing knocking noises. Had I known my warranty was essentially worthless under these circumstances, I never would have purchased this. As such I will be going with a different brand next time.
Not so smart after all...
Purchased this "smart" trainer to use with Zwift rides and structured training for my wife. I already have a wahoo kickr and am very familiar with Zwift. Under normal rides, the Flux S works as it should. However, when using structured training with ERG (trainer supposed to control power), the Flux S becomes "dumb". It does not control the power at all. It merely sets a defined resistance and relies the rider to maintain power by changing pedal cadence. Totally disappointed after waiting weeks for the trainer to arrive, but REI came through for us with its awesome member service and help us out with a different trainer brand.
Great trainer for the price
I use this trainer with my road bike and Zwift and have had a great training experience. The trainer is quiet (although not silent) and consistently accurately measures power output and cadence. The base is heavy enough that feels very sturdy. I have only had a small amount of movement on it when sprinting out of the saddle with no mat underneath on a concrete floor. I have had a couple of instances of the erg function working in a delayed fashion while riding, meaning it would not increase the grade until I had already finished pedaling up a small hill. This seems to be remedied by reconnecting the trainer to the Zwift app, which is good but annoying. For the price though, it performs very well. Though there is a casette in the item picture, you do have to provide your own casette.
Tacx Flux S trainer
I have my trainer hooked up to zwift. It responds well to the program. It records rpm, speed, and power very well. The only negative is a 2 second delay when doing high power intervals. I really enjoy this trainer and have had no major issues with it
Turbo Trainer for average rider to stay road fit
My introduction to a Direct drive trainer and I'm so glad I chose this one. Set up was really easy. You do need to purchase another cassette for it and make sure you have a chain whip and the necessary wrenches. The real road feel is great. Works great with Zwift and keeps my legs in shape for the road. Quiet, all you hear is your chain drive. Great product
Great Trainer...with the Right Connections
I am really pleased with Tacx FLUX S smart trainer. I was a bit hesitant with this purchase, having read a number of reviews criticizing the inconsistent connectivity from the trainer to display devices. I have not had any connection issues. I use the FLUX S with Zwift through my laptop (MacBook Pro). I connect with an ANT+ dongle, but Bluetooth seems to work, too. I had to get a USB-C adapter for the ANT+ receiver. Everything has worked without issues for my first 5 rides - to include my Garmin cadence sensor and Garmin Heartrate Monitor. I also connect the trainer to my Garmin Edge 530. It works without any issues...but this is where I downgrade this review by a star. For some reason, the data output on my Edge 530 differs from the data from Zwift. The mileage and watts often come in lower on the Garmin than what Zwift shows. I am still sorting through the Garmin documentation and it just may be user error on my part. Regardless, I am very happy with the trainer and Ride On!
Solid Trainer from Tacx
I bought one of these a few months back to substitute a wheel-on trainer I had for a couple of years. I discussed several models with friends who already had smart-trainers, and based on their input, and the fact that I’ve been inclined towards Garmin devices for a long time (and Tacx was recently acquired by Garmin), I went ahead with this one as it had what I needed, and was below the 1k $ mark. The trainer proved to be a great pick. It’s solid, responds well to changes and variation from user input, all with an aceptable delay or gap in regards to the reported power/cadence both on simulation or power mode. It is structurally stable, and even though I’m really stretching the Clydesdale cat, I’m able to jump out of the saddle for a sprint or high power interval and it feels like it can hold on (this is one of those scenarios where you can see the little lag at the beginning of a sprint, or afterwards while it normalizes...). The compatibility with Garmin Computers and Watches is solid, as you might expect from sibling devices. When it comes to the software side, the Tacx app is really nice and provides all the bells and whistles you would expect from a modern cycling training app. With the added bonus of the Films (for paid version), where you can simulate a route and follow along a pre-recorded video of someone riding the route. Really nice stuff. Still in the software side, Tacx Activity Capture for consumption at the Garmin Connect Connect platform, even though they are siblings, the relationship is not automatic or seamless. It will require manual exports/imports, and there are scenarios where the captured data will be consumable through Connect, and registered as part of your historical data, but won’t count towards challenges (if you’re into those...) if it comes from a Film Activity. Integration with Zwift is automatic, seamless, and works like a charm. Returning to the hardware side of the conversation, the unit requires a little bit of assembling, a few screws for the legs, the spacers (depending on the type of hub you’re using), and the cassette (it doesn’t come with one). Easy stuff overall. The unit runs relatively quiet, smooth, and it provides a little bit of “road feedback”, specially when the resistance gets harder. In conclusion, it’s a really solid trainer from the mid-range category, at a good price. I would definitely recommend it to anyone. Cheers!
Sooooo disappointed :(
Not a fully baked product. I gave it a month and never got it calibrated correctly. With every ride I had to -re-calibrate and cadence and speed varied wildly. Resistance often would never change and sometimes it would but then never changed back. I connected with Bluetooth and ANT and both were spotty. This product for the big price does not meet expectations at all. Very user unfriendly. Returned it today.