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This item is eligible for return within 30 days of receipt
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Availability:
Only 1 left in stock, order soon!
Arrives
Sunday, Oct 11
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Features
- CONTROLLED RESISTANCE Connect your device (smartphone, tablet, computer, or GPS bike computer) for automatic resistance adjustments based on your chosen app / route.
- REALISTIC RIDE Experience responsive resistance and a realistic ride feel for structured workouts, virtual worlds (Zwift), or re-riding GPS-recorded routes.
- ADVANCED FLYWHEEL TECH - Advanced algorithms and 12 LB electromagnetic flywheel deliver precise inertia, mimicking the feel of outdoor riding indoors.
- SIMPLE SETUP Options for 8, 9, 10, 11 or 12-speed cassettes enable riders to fully mimic their outdoor groupset. Note: Cassette and wheel block not included.
- PROFESSIONAL GRADE Trusted by over 25 top professional cycling teams for crucial training sessions, KICKR COREs robust steel construction offers lasting durability for intense workouts.
Description
SMART INDOOR CYCLING/BIKE TRAINER - Wahoo KICKR CORE delivers a realistic, accurate, and quiet indoor cycling experience. Designed and built with durability and stability in mind to withstand your hardest rides - even if your legs don't.
Brand: Wahoo Fitness
Color: black
Material: Carbon Steel
Number of settings: 1
Frame Material: Alloy Steel
Resistance Mechanism: Electromagnetic
Product Dimensions: 23.62"L x 15.75"W x 15.75"H
Global Trade Identification Number: 22
UPC:
Number of Items: 1
Brand Name: Wahoo Fitness
Global Trade Identification Number: 22
UPC: 853988006522
Number of Items: 1
Manufacturer: Wahoo Fitness
Model Name: Wahoo Fitness KICKR CORE
Included Components: BOX INCLUDES KICKR CORE Smart Bike Trainer, AC Power Adapter, KICKR AXIS Feet - Hard, Medium, Easy, Quick Release Skewer, Drive Side Adapter for 130mm and 135mm QR, Reversible hub spacer for 130mm and 135mm QR, Drive Side Adapter for 12x142 and 12x148 Thru Axle, Reversible hub spacer for Thru Axle, 1.8mm Cassette Spacer
Item Weight: 19 kg
Item Type Name: Wahoo KICKR CORE Smart Cycling/Bike Traine
Model Number: WFBKTR4
Manufacturer Part Number: BKTR4
Warranty Description: 1 year manufacturer
Color: black
Item Dimensions L x W x H: 23.62"L x 15.75"W x 15.75"H
Number of settings: 1
Resistance Mechanism: Electromagnetic
Bike Type: Road Bike
Load Capacity: 250 Pounds
Material Type: Carbon Steel
Frame Material Type: Alloy Steel
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Oct 11
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
I can't ride outdoors in winters here in the northeast as it's just too cold, and even running got to be too unpleasant the older I got, so I decided to start riding indoors on a trainer. I had an old and very basic wheel-on "dumb trainer", but it was noisy and clunky and resistance couldn't be controlled so it wasn't suitable for everyday use, so I decided to get a direct drive smart trainer, and ended up choosing the Core because it was the least expensive one I found that was well-regarded. And I'm so happy that I did. It's very easy to set up, both initially and before each training session, folding up nicely and storing well between uses. Installing a cassette was no different from installing a cassette on a wheel, and I already had all the necessary tools as I do all my bike maintenance. Same with connecting the bike to it, takes just seconds, especially since I keep the rear wheel off between uses since I don't ride outside in winter. Then it's just plug in the adapter, fire up whatever app you're using (I mostly use Zwift but also Rouvy and MyWhoosh), pick an event, race, workout or route, and off you go. Which brings me to the main point, that actually using it is such a pleasure. It's really quiet, much quieter than the drivetrain and even fan, and with a mat shouldn't cause floor vibrations at all (I use a single interlocking foam mat from a set of 4 I got at Harbor Freight for under $10), and the feel is super-smooth and refined, like riding on fresh blacktop, and is as smooth as your drivetrain is (which you should of course keep cleaned and well-lubed and replace parts as needed). Resistance transitions due to changing virtual terrain or workout intensity levels are smooth as well, nothing jerky at all. I've already put in more than 300 miles on it and have absolutely no complaints. And it looks nice too! I just ordered Zwift's Play controllers (you can only buy them directly for $99) to be able to use their new virtual shifting feature, where you no longer have to physically shift and it's all done in software, resulting in smoother and quiet shifts and a wider range of gearing. I'll post an update when I've had a chance to use them for a while. They also allow you to steer, brake and interact with Zwift without having to use a mouse, keyboard or phone, which is awkward while riding. If you're looking to get into indoor cycling and prefer a direct drive trainer and don't want to spend too much, this is basically the only viable choice as Zwift has discontinued its line of trainers (you can find them on sale though as they sell out existing inventory and they promise to support them for at least a couple more years if you're willing to chance it), and they weren't quite as good as the Core. All other options are much more expensive and have features that most people probably don't need, like more precise power readings, higher max watts and incline (like most people will ever exceed 1800W or want to ride up a greater than 16% incline), and forward or side to side movement. Just get it. You won't regret it.
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Reviewed in the United States on February 24, 2024 by BikeRider
I got this to replace an old CompuTrainer. The CompuTrainer was state-of-the art in its day and built to last forever, but they missed the boat on modern software and hardware interfaces. The Kickr Core required just a few minutes to attach the legs and it was ready to go. The app and my Garmin bike computer both recognized it easily. Power control is very smooth. It is accurate as far as I can tell by feel, though I haven't checked with an independent meter yet. Road simulation is quite good, although it doesn't have the hardware to properly simulate coasting (few systems do). I won't try to review the software options other than to say that there are many, from Wahoo and others. There are some small issues, which don't justify removing a star in my opinion. 1) If you let your cadence drop very low while set to a specific power it tries to make that happen by increasing the required torque to nearly impossible levels. Don't absent-mindedly let your cadence drop or you may have to come to a complete stop to get it to reset. 2) The power readings are almost too smooth to be true. If I set to 200 W it typically reads 200 W unless I really push hard or ease up dramatically. In fact I know that my instantaneous power isn't that perfect. 3) I'm going to get a third party cadence sensor. The system does a pretty good job of deducing cadence from the torque you apply, but it's not perfect. 4) They could be more transparent about calibration, particularly in terms of how accurate it is when temperature changes. My workout space isn't temperature-controlled, and I don't really know how much of a change is acceptable before calibration is needed. Also, you can't calibrate during a workout, which means you have to dedicate time and energy to a separate calibration ride. In spite of these quibbles, I am very happy with the product overall. I would buy the same thing again.
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Reviewed in the United States on July 13, 2023 by Steve in Monterey
Connected to the app right away. It’s been a great indoor trainer. I’m happy with it and use it three or more times a week.
Reviewed in the United States on May 10, 2026 by RAMIII
Training for an IRONMAN and this has completely changed the way I trained in bad weather
Reviewed in the United States on June 10, 2026 by robert
This is a great smart trainer. It was easy to unpack and assemble. The setup took just a few minutes including calibration. I replaced an original, 10-year-old Kickr (Gen 1) with this unit and am very happy with it. It feels just as sturdy and steady when standing for a sprint as the old unit. I use it exclusively with Zwift and have had no issues.
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Reviewed in the United States on June 16, 2025 by Vince Liger
Because the weather around here is spotty I've been wanting a way to get some exercise on days that I couldn't go for a ride for some time now. My health insurer gave me $600 towards equipment so that pushed me over the edge just as WaHoo had a sale so I pulled the trigger. The good: It's very quiet. Things like the chain spinning make the most noise. It's very sturdy. If you're slightly handy it's easy to put your bike on it in under a minute. The neutral: There's an exposed belt and wheel that spins. If you have curious pets you might want to be a little careful. The power connector is a short cord that comes out of the unit. I would rather see it be like a laptop where it's built in so there's less chance of it being damaged. The free software is very limited so plan on getting a subscription. The bad: The only way to turn it off is to unplug it. After the latest update WaHoo's software/app RGT will not correctly connect up to it if I leave it plugged in. I don't know if it's the software or the Core. I'm sure it can be used as just a generic resistance device but having a guy displayed on your phone or laptop does make it much more interesting. Some days I just watch a TV show or movie while the rider is displayed on my laptop next to my bike. Other times I connect my laptop to my TV and treat it more like a ride. As you ride it gets easier or harder as you go down or up a hill. You can adjust the percentage of the resistance to your tastes. With WaHoo's software you can track how long you rode and your average wattage (so you can accurately figure out how many calories you burnt). Over all it feels pretty close to what riding in the real world feels like. Once it's paired to your device (I'm using blue tooth but you can use ant+) it's very easy to connect as long as I leave it unplugged when not in use. In the near future I'm going to try it with an app like Zwift or Rouvy.
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Reviewed in the United States on July 11, 2023 by Alex
son training for an Iron Man--this was extremely helpful during bad weather to maintain training
Reviewed in the United States on June 13, 2026 by Dorian
My first wheel off trainer. Super easy to install cassette and skewer. Zwift app was easy to use. I've never enjoyed spin classes or indoor riding of any kind until now. I'm doing group rides, races, routes and workouts, including ftp tests. So fun, quiet, and super hard and efficient training. Awesome!
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Reviewed in the United States on December 28, 2024 by CJ