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H3 Direct Drive Smart Trainer Connected Kit

5 out of 5 stars
8 Reviews



H3 Direct Drive Smart Trainer Connected Kit

Stepping into the modern and heavily tech-based ecosystem of indoor cycling can understandably be daunting and intimidating. With the Saris H3 Direct Drive Smart Trainer Connected Kit, the transition towards becoming a fully-fledged indoor expert is as smooth as the trainer’s precision electromagnetic resistance. The good folks from Saris, out of Wisconsin, USA, strive for a plug-and-play style of set up with the H3 Kit. Unbox the smart trainer, which has the pre-installed 11-speed cassette loaded onto the freehub, set your end caps to match your bike, and connect the trainer to either the included Zwift or Rouvy training platform to ride.

The training on a smart trainer feels intuitive. Saris intends the H3 to replicate on-road riding characteristics like coasting, hills, and sprint efforts with impressive accuracy and responsiveness. Power is within +/-2% accuracy, measure to 2000 watts, and replicate 20% inclines. When connected to training platforms, such as Zwift, you virtually ride courses while the app and trainer communicate course details and your specific on-bike efforts over ANT+ and Bluetooth. The result is an exciting, life-like, and performance-forward training experience.

The H3 trainer is built to be a fully-enclosed system that needs no significant upkeep. Self-calibrating, self-cooled, and without the need for external devices to assist it, the trainer is always ready for the training session. Should you need to run the H3 without app connection, the “headless” feature allows the trainer to act like its older sibling the Fluid2, so you’ll be able to train on a progressive power curve as you move through the gears on the cassette. An integrated front-wheel block is integrated into the design, and the H3 is XD/XDR compatible with separately sold freehubs. And the included sweatband protects your bike’s paint from heavy sessions when puddles are the goal.


  • A fully connected smart trainer with 1-month subscriptions to virtual worlds
  • Precision calibration and electromagnetic resistance for quiet, smooth training
  • Folding feet for compact storage, pre-installed cassette, and sweat guard
  • Zwift and Rouvy subscriptions to experience virtual training ecosystems
  • No external sensors required, fully integrated power, speed, cadence
  • Reduced noise during training maintain happy house guests and neighbors
  • Made in Wisconsin,USA
  • Item #SRS1WW4
electromagnetic, 20lb flywheel
yes (feet/legs)
integrated, dual ANT+ FE-C, Bluetooth (FTMS standards)
trainer, [cassette] 11 x 25t, 11-speed, USB extension cable, ANT+ USB Dongle, sweat guard, front-wheel block, [end caps] 130mm and 135mm quick release, 142mm and 148mm thru-axle, [subscriptions] 1-month Zwift, 1-month Rouvy
[open] 31 x18.5 x 19.5in, [closed] 8.5 x 18.5 x19.5in
Manufacturer Warranty

Overall Rating

5 based on 8 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 0 reviews
5 Stars - 8 reviews

What do you think about this product?


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5 out of 5 stars

August 15, 2023

Great riding

Rides great, smooth, nice equipment, I ride along with the app


Originally reviewed on saris.com

5 out of 5 stars

July 1, 2023

Saris for the Win !!

I had my choice of trainers, and Sarris was the hands-down winner, the quiet ride the H3 smart trainer provides is unparalleled, not to mention how easy it is to use, and how compact it is, with retractable legs and a handy handle to pack it for a weekend at the beach so I won’t miss my miles for the day


Originally reviewed on saris.com

5 out of 5 stars

December 13, 2021

Makes training on Zwift so easy

I used the original hammer and thought the unit was OK. It was loud and the signal would drop frequently, but this H3 has been wonderful. It quickly syncs up with Zwift and is buttery smooth. I opted for the kit that included the cassette because of supply chain struggles finding a Shimano cassette. The included cassette is pretty poor. It's noisy, and just does not have very crisp shifting Makes your realize how good a Shimano Ultegra cassette really is. Overall, I am very pleased with this unit and glad I finally made the investment.


Originally reviewed on saris.com

5 out of 5 stars

November 29, 2021

Great resistance !!

I moved up from the fluid 2 to this bad boy, I am sure I will be ready for the mountain mayhem next season. I could barely finish the intervals I used to do on the fluid with no problem. Its a great training tool


Originally reviewed on saris.com

5 out of 5 stars

November 17, 2021

Hammer 2

I've put it through the wringer
Size Bought:
6' 1"

I have been using my Hammer 2 for over three years without an issue - almost 8,000 miles. I'm the only one I know with a Hammer smart trainer and everyone else has had an issue with their trainers at one time or another. My friends with Wahoo trainers seem to have had really good luck with their customer support. The Hammer trainer is suppose to have a lifetime warranty. I hope I never have to use it.

Terry F
5 out of 5 stars

April 12, 2021

Very nice trainer

Bought this to upgrade to a smart trainer. Love the unit and it's capabilities. Very stable and quiet.


Originally reviewed on saris.com

5 out of 5 stars

November 30, 2020

This thing is a monster in a good way

This thng is great. Comes with cassette already on and pretty much ready to go.


Originally reviewed on saris.com

5 out of 5 stars

November 24, 2020

Great Trainer

I was looking for a trainer to improve my cycling this winter and wanted to go online with it. The H3 has worked as advertised, and is made in the USA. The chain drive on my road bike is louder than the H3. Setup was simple and hassle free which is why I selected the bundle. No problems connecting to cycling apps through Windows 10. The feature I like the most is terrain matching with a cycling app. When the H3 changes resistance, it feels seamless. There is no slippage like the tire on trainers. Instead of watching the clock to finish my workout, I pay more attention to the virtual road. Staying on my bike indoors for more than a hour is no longer a problem.


Originally reviewed on saris.com