KICKR CORE 2 Smart Trainer Information & FAQ

The Wahoo KICKR CORE 2 Smart Trainer delivers an improved training experience using the proven flywheel technology and advanced algorithms pioneered by Wahoo's original legendary trainers. Durable enough to withstand the most intense training with more software options -- and featuring the new KICKR Bridge for an extended training ecosystem -- the KICKR CORE 2 is the new foundation for data-driven training.

Download the Wahoo App

The Wahoo app keeps your trainer up to date and leverages your smartphone to record basic workout information, delivering data-driven power that fuels your training and fitness goals. Get the app now to register your KICKR CORE.

KICKR CORE 2 Design Specifications

Part Number: WFBKTR125
Dimensions: 23.5 x 20.5 x 18.5 in / 59.7 × 52 × 47 cm
Weight (Unboxed): 43.5 lbs / 19.7kg
Rear Wheel Size: 24" RD / 24" MTB / 650c RD / 26" MTB / 700c RD / 650b MTB / 29" MTB
Hub Types: 130/135mm QR, 12x142/148 Thru Axle - Adapters Included
Drivetrain: Various - without cassette, with 8-12 speed Shimano-compatible cassette, or Zwift Cog + Click
KICKR CLIMB Compatible: Yes
KICKR HEADWIND Compatible: Yes
Front Wheel Block: Sold Separately
Resistance Type: Electromagnetic
Accuracy: + / - 2%
Connectivity: Bluetooth*^®, ANT+, ANT+ FE-C
*Zwift Click requires Bluetooth connection.
Wireless Software Updates: Yes
3rd Party Power Meter Support: Yes
Devices: iOS, Android, PC (Mac and Windows)
Max User Weight: 250 lbs (113 kg)
Power Source Requirements: 100-240V~1.5A 50-60 Hz
Maximum Simulated Grade: 16%
Maximum Power Output: 1800 Watts

In the Box

KICKR CORE 2 Smart Trainer
Front/Rear Leg Assembly (Longer/shorter leg)
AC power adapter (plug will vary depending on region and location)
Bolts for leg assembly (x4)
6mm hex tool
1.8mm spacer (included with cassette version only)
Quick release (QR) skewer

Included adapters:

A. Quick release drive-side adapter

B. Quick release non drive-side adapter
(reversible for 130/135mm)

C. Thru axle drive-side adapter

D. Thru axle 12x142mm non drive-side adapter

E. Thru axle 12x148mm non drive-side adapter

*Caution: Use of third party power adapters not supplied by Wahoo Fitness may cause permanent damage to your trainer.

*Note: KICKR CORE 2 Smart Trainer for the Zwift Ride (SKU: WFBKTR125-3CR) only includes items 1-5 and adapters C and D.

Features

The KICKR CORE 2 Smart Trainer offers five new features from its previous version. These include:

WiFi Connectivity: Simplifies pairing and enables automatic firmware updates.
Redesigned Feet with 4-Bolt Assembly: A flatter leg contour allows for a faster, more stable setup with built-in installation guidance.
KICKR Bridge (sensor bridge) NEW: Tackles common connectivity challenges by turning KICKR CORE 2 Smart Trainer into a central sensor gateway. Data from heart rate monitors can now stream directly through the trainer to apps, reducing setup friction.
Updated LED System NEW: Multi-color LEDs now provide clearer status updates for connectivity, ride readiness, and diagnostics, including WiFi, BLE, or multiple connection states, virtual shifting status, firmware update progress or error conditions.
KICKR Race Mode: With KICKR Race Mode activated, you’ll notice a boost in responsiveness to sudden changes of pace, allowing you to control and time attacks with precision.

Additional features

Compatibility

Frequently Asked Questions

Setup

Download the full Wahoo KICKR CORE 2 Quick Start Guide as a PDF for instructions in English and other languages, or follow the link to our online support page:

CORE 2 with cassette or CORE 2 with Zwift Cog and Click (.PDF)

CORE 2 for the Zwift Ride only (.PDF)

Set up your KICKR CORE 2 Smart Trainer NEW
Zwift Support Resources for setting up and using the CORE Zwift One with Zwift: