Reliable. Durable. Quieter Than Ever Before.
When it comes to indoor bike trainers, everyone wants to know: How quiet is it? Our team in Madison, Wisconsin took this question to heart and set out to build a trainer so quiet that the only sound you’ll hear is the gentle whir of your drive train. Building on the legacy of our renowned H3 model, this cutting-edge trainer joins the ranks as the quietest smart trainer in our lineup.

With a sound specification of 59 decibels at 20 mph, the direct drive H3 and H3 Plus smart indoor bike trainers are five times quieter than previous generations, making them the quietest smart trainer to ever leave our doors.

The newest update? This latest model is engineered for seamless compatibility with 12-speed drivetrains, allowing even more cyclists to enjoy the ride. 

The precision-crafted components measure power, speed, and cadence, while the precision-balanced flywheel handles 2000 watts and stimulates a 20% climbing grade.

Gearing up for some heavy training? No problem. When things get intense, the H3 Plus steps in with an internal cooling system that keeps the electromagnetic system working – and accurate – long after your legs have given out.

Product Features
Direct drive: Yes, eliminates tire wear
Flywheel: 20 lb. precision balanced to create realistic inertia
Folding Legs: Yes, unfold to create widest footprint available for added stability
Front Wheel Block: Yes, built in
Carrying Handle: Yes, integrated
Leveling Feet: Yes, for easy adjustment on uneven surfaces
Cooling System: Internal, moves air through trainer to keep it cool
Thermal Sensors: Yes, provide accurate performance data
No External Sensors Required: measures speed, cadence, and power.
Seamless Integration: connects to indoor cycling apps with dual ANT + FE-C and Bluetooth FTMS standards.
Includes two month subscription to ROUVY virtual training app.
Zwift certified.
BKOOL certified.
ROUVY certified.

Tech Specs:

• Noise level: 59 decibels at 20 mph
• Power Accuracy: +/- 2%
• Resistance Unit: Fast-response electromagnetic
• Sensors: Built-in, speed, cadence, and power
• Grade Simulation: 20%
• Maximum Watts: 2000 at 20 mph
• Maximum Weight (rider and bike): 300 lb.

Connectivity:

• Headless mode (powered on, not paired to any apps) lets you ride with a progressive resistance curve that matches the Fluid²
• Integrated dual ANT+ FE-C and Bluetooth standards
• LED indicator lights confirm connection
• Compatible with a wide variety of devices and indoor cycling applications, including ROUVY, Zwift, TrainerRoad, Kinomap and many more. Contact us with questions about compatibility with other software
• Over the air (OTA) firmware updates via Bluetooth devices
• Contact us wtih questions about compatibility with other software

Bike Compatibility:

• Thru-axle compatible for rear hub widths of 142 mm or 148 mm
• Thru axles with fixed levers may require a Thru Axle Adapter
• Quick-release compatible for rear hub widths of 130 mm and 135 mm
• Compatible with Shimano/SRAM 8-12 speed cassettes (maximum 42T with MTB)
• XD/XDR freehubs sold separately
• Microspline freehub coming soon

FYI:

• Cassette sold separately
• ANT+ and BlueGiga USB dongles sold separately