Today, Saris launched their new H4 smart trainer with more power, better accuracy, and auto-calibration. The new H4 trainer will retail for US $1,000 and will be available to order from starting today.

The new H4 comes three years after we have seen an update to Saris’ premium direct drive smart trainer. Saris updated the trainer with some needed features to keep it on par with other trainers at this price level.


Saris increased the stated accuracy of the H4 to +/-1% from +/-2%. The new H4 supports up to 2,300 watts and 25% simulated climbs. Saris also added auto-calibration and support for 12-speed road bikes. Saris also went back to the yellow accent color rather than the black/charcoal color of the H3.


  • PRICE: US $1,000 cassette not included.
  • DESIGN: Cast and machined aluminum with two adjustable leveling feet and a carrying handle.
  • Max Power: 2,300 watts.
  • STATED ACCURACY:  +/-1%. 
  • METRICS: Transmits power, speed, and cadence.
  • AXLE: Supports 130 and 135mm quick release, 142-148mm thru axle. All adapters are included.
  • CASSETTE COMPATIBILITY: 8,9,10,11, and 12 speed SRAM/Shimano. XD/XDR freehubs sold separately.
  • CONNECTIONS: Bluetooth FTMS and ANT+ FE-C.
  • FLYWHEEL: 20lbs (9kg).
  • Unit Weight: 47lbs (21.3kg).
  • SUPPORTED RIDER WEIGHT: 300lbs (136kg).

Saris has been going through financial trouble due to too much inventory and debt since the demand for trainers dwindled down the past year after the initial spike in demand after Covid. The company filed for Chapter 128 in their home state of Wisconsin last July, which is an alternative to bankruptcy that consolidates its debt but will likely lead to the sale of the company. Bids to purchase the company will be solicited, and the winning bid will be determined by the court. Haven’t been able to find any update on this case yet, and Saris did not comment on it.

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