| Manufacturer | Garmin (Tacx) |
| Type | Direct-drive smart trainer |
| Series | Tacx FLUX |
| Price | £629.99 at Garmin UK |
| Predecessor | – |
| Successor | – |
| Part number | T2980.62 (cassette not included) |
| Weight | 23.6kg |
Specifications and features as listed by Garmin.
Summary | Versus Tacx FLUX S | Specifications | Features | Quick answers | Further reading
Summary
Tacx FLUX 2 is a direct-drive smart trainer that handles sprints up to 2,000W and simulates climbs up to 16%. It measures power to within 2.5%, uses a 7.6kg flywheel for a realistic ride feel and is designed to run quietly. It works with Zwift, TrainerRoad and the Tacx Training app, and it comes with axle adapters that fit 142 x 12mm and 148 x 12mm thru-axles out of the box. A cassette is not included. It costs £629.99 at Garmin UK.
Versus Tacx FLUX S
- Handles sprints up to 2,000W; the FLUX S handles 1,500W
- Simulates climbs up to 16%; the FLUX S simulates 10%
- Measures power to within 2.5%; the FLUX S measures to within 3%
- Peak torque is 41Nm and maximum brake force is 120N; the FLUX S reaches 22.1Nm and 65N
- Uses a 7.6kg flywheel; the FLUX S uses a 7kg flywheel
- Weighs 23.6kg; the FLUX S weighs 22.8kg
Specifications
| Performance | |
|---|---|
| Maximum power | 2,000W |
| Maximum simulated grade | 16% |
| Power accuracy | Within 2.5% |
| Calibration | Spin down |
| Maximum torque | 41Nm |
| Maximum brake force | 120N |
| Flywheel | 7.6kg / 16.8lb |
| Mass inertia | 31.2kg / 68.8lb |
| Magnets | 8 permanent ferrite magnets and 8 electromagnets |
| Measured | Speed, cadence, power |
| Physical | |
| Dimensions | 670 x 642mm / 26.4 x 25.3in |
| Height | 460mm / 18.1in |
| Weight | 23.6kg / 52lb |
| Electrical requirement | 110-240V |
| Connection indicator (ANT+/Bluetooth) | 2 LEDs |
| Bike compatibility | |
| Cassette | Not included |
| Suitable cassettes | Shimano/SRAM 9 to 11 speed. Campagnolo. SRAM XD and XDR body (sold separately). Shimano 12-speed Hyperglide+. Not suitable for the Specialized SCS system. |
| Suitable axles | Quick release 130mm/135mm x 5mm. Thru-axle end caps 142mm/148mm x 12mm. A 135mm thru-axle adapter set is available separately for bike dimensions outside the industry standard. |
| Connectivity and compatibility | |
| Wireless | ANT+ (FE-C), Bluetooth |
| Control by | Smartphone, tablet, ANT+ bike computers, stand alone, computer via ANT+ antenna |
| Read out on | Bike computer, computer with ANT+ antenna, smartphone, sports watch, tablet |
| Apps | Zwift, TrainerRoad, Tacx Training app |
| © the5krunner. Link required. | |
Features
Ride feel and performance
- A 7.6kg flywheel gives a realistic ride feel and good responsiveness
- A well-balanced design and large footprint keep the trainer stable in sprints up to 2,000W
- Climbs up to 16% are simulated
- Vibration and noise are kept to a minimum, which makes it one of the quietest flywheel-equipped bike trainers available
Accuracy and compatibility
- Power, speed and cadence are measured to within 2.5%
- Additional axle adapters fit 142 x 12mm and 148 x 12mm axles out of the box
- Bluetooth Smart and ANT+ FE-C give compatibility with apps such as TrainerRoad and Zwift
- Stand-alone mode simulates a flat road, with resistance rising as you ride faster
- Connect to multiple devices at once, so a Garmin bike computer records your ride while the Tacx Training app controls the trainer
Tacx Training software
- A library of more than 100 high-quality real-life videos covers climbs such as the Alps and cobbled roads such as Milan
- Structured training plans are designed for your fitness level, and you can race live opponents, upload GPS data and ride with 3-D maps
Quick answers
How much does the Garmin Tacx FLUX 2 cost?
Tacx FLUX 2 costs GBP 629.99 at Garmin UK. A cassette is not included.
What is the Tacx FLUX 2 maximum power and gradient?
Tacx FLUX 2 handles sprints up to 2,000W and simulates climbs up to 16%.
How accurate is the Tacx FLUX 2?
Tacx FLUX 2 measures power, speed and cadence to within 2.5%. It uses a spin-down calibration.
Does the Tacx FLUX 2 work with Zwift?
Yes, Tacx FLUX 2 connects over ANT+ FE-C and Bluetooth and works with Zwift, TrainerRoad and the Tacx Training app.
Does the Tacx FLUX 2 fit thru-axle bikes?
Yes, Tacx FLUX 2 comes with axle adapters that fit 142 x 12mm and 148 x 12mm thru-axles out of the box. It also fits 130mm and 135mm quick release axles.
How much does the Tacx FLUX 2 weigh?
Tacx FLUX 2 weighs 23.6kg and measures 670 x 642mm with a height of 460mm. It uses a 7.6kg flywheel.
Further reading
Related trainers
- Tacx FLUX S, the lower-priced trainer at £399.99
- Tacx NEO 2T, with 1% accuracy and no calibration
- Tacx Nēra, with movement built in
Small things I always use
- Garmin 90-degree charging adapter: Charges your Garmin from any USB-C cable. Essential when travelling. I use one.
- Body Glide: The blue anti-chafe stick swimmers and runners carry. I use it.
- Speedo earplugs: Fewer ear infections and no cold-water dizziness. I use them.
- Dryrobe Advance: My winter changing robe for open-water swims. I use one. A cheaper option is the AONYIYI changing robe.
- Maurten: Race fuel that stays easy on the stomach. I use them.
- Beet It Sport nitrate shots: Beetroot shots I take in the days before a race. I use them.
- Garmin charging puck: The quickest way to top up before a session. I use one.
- Injinji: Toe socks that stop rubbing, so you run more. I use them.
- Ultimate toe protectors: Stop black toenails on long runs. They work. I use them.
- Compressport R2 v2 calf sleeves: My calf sleeves of choice. I use them.
- Cellucor C4: My pre-workout before hard sessions.
- TPU tubes: Schwalbe Aerothan, Tubolito and Pirelli SmarTube. Light, tiny spares. I use all three.
- G8 insoles: Adjustable insoles that are good. I use them.
- Cycplus Cube: A 97g electric pump that gets a road tyre rideable in two minutes. I carry one. 5% off with code THE5KRUNNER.
Watches and sensors
- Polar H10: My daily driver for waking HRV.
- Polar Verity Sense: My backup arm-worn HR sensor.
- Nomad bedside charger: Charges my iPhone and Apple Watch overnight. I use it, and many of their bands.
- Train.Red: The best muscle oxygen sensor I’ve used.
- Tymewear: Accurate heart rate and reliable ventilatory zones. I use it to pace endurance rides over an hour.
- Garmin Forerunner 970: A pro-grade triathlon watch. I use this.
- Apple Watch Ultra 4: My daily smartwatch. No phone needed on rides.
- Garmin Fenix 9 Pro: I’ve just bought one.
On the bike
- Continental GP5000 for everyday riding, and Aero 111 on the front for special occasions.
- Helmets: Specialized S-Works Evade 3 for road riding, and Rudy Project Wing for TT-style races. I use both.
- Ravemen FR300: A front light that mounts under your Garmin or Wahoo. I use one.
- Wahoo TRACKR Radar: I use it on one bike and Varia on the other. They perform the same.
- Garmin Varia RTL515: Radar that warns you of cars from behind. I use this model.
- Wahoo ELEMNT Roam 3: The bike computer that’s easy to use. I use mine on most rides.
- Favero Assioma Pro RS2: Accurate power pedals that swap easily between bikes. I use this model.
Home and indoor training
- NPE Runn: Makes my basic treadmill smart, sending more accurate speed and distance to my watch and Zwift. I use it.
- Google Wifi: Keeps Zwift connected in my pain cave. I use it.
- Apple TV 4K: Zwift on the big screen. I use two.
- Google Nest Doorbell (wired, 2nd gen): My video doorbell, running in both Google Home and Apple Home. I use it.
Health, recovery and sleep
- FreeStyle Libre 3 Plus: Shows how my blood sugar responds to diet.
- hDrop: Measures my sweat loss in summer and indoors.
- Fourth Frontier Zone: Checks my heart under load in hard sessions.
- Oura Ring 5: My partner’s recovery tracker of choice.
- Eight Sleep: A cooling mattress cover my partner and I use nightly.
Reader-Powered Content
This content is not sponsored. It’s mostly me behind the labour of love, which is this site, and I appreciate everyone who supports it.
Support the site: Follow (free, fewer ads) · Subscribe (paid, ad-free) · Buy Me A Coffee
Written by real people, with AI assistance. Fact-checked and verified for originality. See the Editorial Policy. FTC: Affiliate Disclosure — some links pay commission. As an Amazon Associate, I earn from qualifying purchases.
