Wahoo KICKR CORE 2: features and compatibility

Executive summary

The KICKR CORE 2, announced in September 2025, replaces the 2018 KICKR CORE. Wahoo kept the resistance unit figures that made the original the default mid-range recommendation, 1,800 W, 16 % gradient, ±2 % accuracy and a 5.4 kg flywheel, and changed the parts around it: Wi-Fi is built in, three Bluetooth clients can connect at once, a 10 Hz “race mode” data rate is available, the legs are now flat bolt-on pieces, and the unit weighs 13.6 kg instead of roughly 18 kg.

This article is a specification comparison. We have not ridden the CORE 2 yet. Every figure below is sourced on the product page, and the hands-on review will replace this one when it is done.

Specifications

The full table with sources sits below this article. The short version: direct drive, electromagnetic resistance, 11-speed cassette pre-installed on the standard version (a Zwift Cog bundle exists), thru-axle and quick-release adapters included, 113 kg rider limit.

Design and build quality

The visible change is the leg design. The original CORE folded; the CORE 2 uses two flat legs that bolt on, which Wahoo pairs with a lower overall weight. Whether the fixed stance is as stable as the old wide fold-out legs is one of the things we will look at.

Setup and installation

A pre-installed cassette means a standard 11-speed bike mounts straight away. Riders on 12-speed road groupsets or 13-speed drivetrains use the supplied HG freehub with their own cassette; Wahoo lists 8- to 13-speed compatibility. Firmware updates arrive automatically over Wi-Fi through the Wahoo app.

Connectivity and compatibility

Declared protocols: Bluetooth FTMS, ANT+ FE-C and Wi-Fi, with three concurrent Bluetooth connections. There is no Ethernet port. The three-connection figure matters for anyone who runs a phone app and a head unit or watch at the same time.

For the Cadexa app the relevant line is FTMS. Technically that covers ERG targets and simulation gradient; see the compatibility checker for the three-layer status, which will read not yet tested until our verification record is published.

Performance and functionality

Unchanged on paper from the original CORE. The −10 % minimum gradient figure on the spec sheet does not indicate a motor-driven flywheel; the CORE 2 cannot push the flywheel to simulate a descent. The 10 Hz data mode is aimed at racing platforms that want faster power updates.

Strengths and weaknesses

See the verdict box above. The main open question is the one a spec sheet cannot answer: how the ERG controller behaves at a new target, and how stable the power reading is over a long session.

Comparison with alternatives

The KICKR v6 raises the resistance and gradient ceiling and adds the wired option; the Justo 2 declares a steeper gradient and a tighter accuracy claim at a higher price band.

Who should buy this product?

Riders who want a direct-drive trainer with every current protocol and are not chasing the highest gradient figure. It is also the trainer Zwift bundles into the Zwift Ride.

Final recommendation

Pending. On specifications the CORE 2 is the obvious mid-range direct-drive candidate; we will confirm or revise that after testing.

Where to buy

Retailer links are listed below. We show a price only when it was checked within the last seven days.