Smart Turbo Trainer Specs Compared: 12 Models Side by Side

This page puts the published specs of 12 smart turbo trainers side by side: claimed power accuracy, maximum power, maximum simulated gradient and flywheel weight. Almost every number comes from the manufacturer’s own product page or technical sheet, linked in the sources list below. The one exception is the KICKR CORE 2 flywheel weight, which Wahoo does not publish; that figure comes from Zwift’s UK store, which sells the trainer. Where a maker does not publish a figure, the chart says so rather than filling the gap with an estimate. For my own buying recommendations, see the best direct drive turbo trainers and the best smart trainers for Zwift.

Claimed power accuracy, shown as watts

An accuracy percentage is easier to judge as watts. The chart below sets each trainer’s claim against a steady 300 W effort, a round number for a hard interval. The band shows the range a trainer is allowed to read and still be within its own claim.

The spread is narrower than the marketing suggests. The tightest claims (1%) allow 3 W either side of 300 W, and the loosest here (3%) allows 9 W. For structured training, a trainer that reads the same way every session matters more than a small gap between two claims, which I explain in understanding power readings on your turbo trainer.

Two claims come with caveats. Saris gives +/- 5% in a headline bullet and +/- 2% in the tech specs on the same page; the chart uses the tech-spec figure. Elite also lists the Rivo’s power as estimated rather than measured.

Maximum power

Every direct drive trainer with a published figure is rated at 1,800 W or more; Wahoo does not publish one for the KICKR MOVE. The Elite technical sheets show how much speed matters: the Justo 2 and Direto XR-T are rated at 2,300 W at 40 km/h but 1,100 W at 20 km/h, and the Suito-T drops from 1,900 W to 730 W. If you are a heavy rider who sprints from low speed, compare the low-speed figure where a maker gives one.

Maximum simulated gradient

Gradient ratings matter most in apps with steep virtual climbs. A 12% or 15% limit means the trainer stops adding resistance before the virtual road stops getting steeper.

Flywheel weight

A heavier flywheel keeps turning between pedal strokes, which helps a trainer feel smoother on flat roads. It is one input to ride feel, alongside how the brake reacts. The Saris H3 has the heaviest flywheel here at 20 lb (9.1 kg), and the Elite Suito-T the lightest at 3.5 kg.

Noise: what makers publish

Only Saris publishes a noise figure: 59 dB at 20 mph for the H3 and H3 Plus. Wahoo, Garmin (Tacx), Elite and JetBlack describe their trainers as quiet but give no decibel figure on the pages checked, so there is no fair way to rank them on noise from spec sheets. If noise is your main concern, my guide to using a turbo trainer in a flat sets that 59 dB figure against UK building standards for sound between flats.

The full dataset

Sources and notes

Each trainer’s figures come from the page listed. Notes record where a maker’s own pages disagree, or where a figure came from a second document.

1. Tacx NEO 3M: Garmin UK product page. Garmin lists the flywheel as virtual, with mass inertia variable up to 125 kg.
2. Wahoo KICKR (v6): Wahoo UK product page, plus additional source. Wahoo states a 16 lb flywheel. Its support page prints the conversion as 5.5 kg, which does not match 16 lb (7.3 kg). Weight from Wahoo support.
3. Wahoo KICKR MOVE: Wahoo support: KICKR MOVE information. Wahoo does not list a maximum power figure for the MOVE on the pages checked.
4. Elite Justo 2: Elite product page, plus additional source. Maximum power is quoted at 40 km/h (1,100 W at 20 km/h). Elite web page and datasheet differ on flywheel weight (7 kg vs 7.2 kg).
5. Elite Direto XR-T: Elite technical sheet (hosted by Shimano). No longer on Elite’s current trainer list. Maximum power is quoted at 40 km/h (1,100 W at 20 km/h).
6. Saris H3 / H3 Plus: Saris H3 Plus product page. The same Saris page says +/- 5% in a headline bullet and +/- 2% in its tech specs; the tech-spec figure is shown. Saris says the 59 dB figure covers both the H3 and H3 Plus. Maximum power is quoted at 20 mph.
7. Wahoo KICKR CORE 2: Wahoo UK product page, plus additional source 1, plus additional source 2. Wahoo does not publish the flywheel weight; 5.4 kg is from the Zwift UK store listing. Weight: Wahoo support says 19.7 kg, the Wahoo UK product page says 13.6 kg.
8. JetBlack VICTORY: JetBlack product page. JetBlack does not publish flywheel or trainer weight on the page checked.
9. Tacx FLUX 2 Smart: Garmin UK product page. Garmin quotes 31.2 kg of mass inertia from the 7.6 kg flywheel.
10. Elite Suito-T: Elite technical sheet (hosted by Shimano). No longer on Elite’s current trainer list. Maximum power is quoted at 40 km/h (730 W at 20 km/h).
11. Elite Rivo: Elite product page. Elite lists power as estimated rather than measured. Maximum power is quoted at 40 km/h.
12. Wahoo KICKR SNAP: Wahoo support: KICKR SNAP information. The only wheel-on trainer here. Its product page on Wahoo’s UK store no longer loads.

Several of these trainers have been replaced or withdrawn: Elite’s Suito-T and Direto XR-T no longer appear on Elite’s trainer list, and the KICKR SNAP product page no longer loads on Wahoo’s UK store. They stay in the dataset because many are still in use and sold second-hand.