Clever Training

STAC Zero Halcyon Smart Trainer


Item # SZH2018
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  • Description
  • Q & A
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STAC Zero Halcyon Smart Trainer

Silence is golden. Experience the convenience, power and portability of a nearly silent trainer with the STAC Zero Halcyon Smart Trainer. Halcyon is the smartest STAC trainer to date featuring innovative controlled resistance functionality via ANT+ FE-C and Bluetooth Smart (FTMS). Connect with popular training software like Zwift, TrainerRoad and Sufferfest plus compatible devices like Garmin smartwatches. Halcyon combines sturdy steel construction with a rechargeable lithium-ion battery to deliver a durable, fully portable trainer. Hit the road anytime, anyplace and pedal on.


  • NEW, ANT+, ANT+ FE-C and Bluetooth Smart (FTMS) Connectivity: Connects to popular training apps, head units and GPS watches and is fully controllable by devices or applications that are FE-C or FTMS enabled. Previous units offered only ANT+ compatibility.
  • NEW Automatic Resistance Calibration: Servomotors move the magnetic arms every time the wheel stops to self-calibrate and can be adjusted electronically from apps like Zwift and TrainerRoad. Older STAC units required a change in speed or manual manipulation of the arms for adjustments.
  • Interactive features: Connects with iOS, Android and PCs. Includes wireless software updates and free STAC Control Panel app for iOS and Android.
  • Silent: The innovative no-contact resistance provided by magnets interacting with your wheel’s alloy brake track offers a completely silent training experience. No wheel contact, no low frequency noise caused by an external flywheel. The only noise you’ll hear while riding is your bike’s drive train.
  • Easy Storage: Folds down to 3” flat for convenient storage when not in use
  • No Tire Wear:No wheel contact means no need to invest in trainer tires or clean up after usage
  • Fully Portable:A rechargeable lithium-ion battery provides 10 hours of ride time between charges. Leave it plugged in or take it with you to train anywhere, anytime.
  • +/- 2% Accuracy: Can generate power and provide accurate power measurements up to 2000W
  • Thru-Axle Compatibility: Thru-axle adapters are available at a discount through a partnership with Robert Axle Project
  • Wheel Compatibility: Works with folding tires and alloy wheels with a sleeved or welded joint. Not compatible with pinned alloy wheels, carbon wheels or wire-beaded tires.


  • Maximum power: 2000W
  • Maximum slope: 7%
  • Accuracy: +/- 2%
  • Trainer weight: 17lb
  • Flywheel: 5 lbs in-wheel bar weight
  • Power Source: Micro-usb cable
  • Supports wheels 25.5"-29" (650 – 700cc)
  • Compatible QR skewer included
Q & A