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BKool 1.0 Turbo Trainer



Excellent value turbo trainer that includes many features not usually seen at this price point

At every product is thoroughly tested for as long as it takes to get a proper insight into how well it works. Our reviewers are experienced cyclists that we trust to be objective. While we strive to ensure that opinions expressed are backed up by facts, reviews are by their nature an informed opinion, not a definitive verdict. We don't intentionally try to break anything (except locks) but we do try to look for weak points in any design. The overall score is not just an average of the other scores: it reflects both a product's function and value – with value determined by how a product compares with items of similar spec, quality, and price.

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On the face of it, the BKOOL sounds like the bargain of the century – a power enabled turbo with variable resistance linked to first person videos, all for just shy of £430. In a market where those sort of features will typically set you back the better part of a grand, it looks very promising indeed. Surely it's too good to be true?

The answer to that is: sort of. Those looking for absolute accuracy and precision from the power calculation will be disappointed by the BKOOL as its lack of calibration protocol means that the power numbers are an estimate at best. For those more interested in the real-life videos, the BKOOL features a massive library of such videos available on a cheap subscription model, which, combined with the realistic road feel make it a great tool for simply getting in the miles over winter.

The unit

The actual BKOOL turbo trainer itself looks relatively standard from afar, but closer inspection reveals a key difference to how the bike is attached. Instead of clamping the roller against the tyre like almost every other turbo out there, the BKOOL relies on the weight of the rider to provide the contact force between tyre and roller - the consequences of this design are numerous:

Firstly, when not attached to a bike, the BKOOL naturally wants to lay flat as the hinges on the support arms are free to rotate. This makes it quite a bit easier to stow away, as you don't have to adjust any bolts or clamps to get it to fold flat. In addition, different sized wheels are automatically catered for without having to make adjustments. The resistance unit at the rear is also hinged and can be folded in, further reducing the BKOOL's footprint when stored.

Secondly, the contact force will vary depending on whether you are sitting in the saddle or standing on the pedals. This in turn will affect the resistance that the unit delivers which in turn affects the calculated power. As such, the unit isn't really very suitable if you're going to be doing any sort of extended out of the saddle riding – not usually something you'd do on the turbo anyway, but this quirk is worth bearing in mind when assessing the accuracy of the power readout.

Finally, tyre pressure will also have a significant impact on the calculated power, as this will affect the rolling resistance as well. For consistent results, making sure that the pressure in your rear tyre is the same every time you hop on the turbo is a must.

As a kind of side note, I found that there seemed to be quite a lot of tyre debris deposited on the resistance unit after only a few rides. However, further use hasn't revealed tyre wear to be any greater problem that on a standard turbo - the shaping of the resistance unit behind the roller, and the white colour just seems to collect the used rubber and make it stand out.

The frame itself is manufactured from steel and is appropriately hefty for a turbo trainer. Despite being able to lay it flat, its sheer mass means that it's not really the ideal turbo for travelling with. The fact that it requires a mains input also restricts its use for anything outside a building, such as a race warm up.

Having mentioned its weight, the one disappointing aspect of the turbo unit itself is that it's not the most stable when really laying down the power. Given that its usage is effectively limited to a dedicated turbo trainer area a.k.a pain cave, I would've liked to see a design with a larger footprint to help in this regard.

Also included in the package is a single position front wheel block, which positions the bike level, and the ANT+ sensors you'll need to get the most out of the trainer: heart rate and cadence.

The web interface

The key to unlocking the potential of the BKOOL is the web interface, where you are able to create personalised workouts, download first person ride footage, and even keep track of your progress via a training diary. Furthermore, the website also acts as a social media-type forum where users can post routes, create their own clubs, and even compete against each other. Sort of like Strava for the sun-deprived.

In terms of appearance and functionality, the web interface is on the basic side, but easy enough to understand and get the hang of it. It's clear that 'flashiness' has been compromised to meet a certain price point, but this isn't necessarily a bad thing.

What could be improved though, is the time it takes to go through the whole process of creating a workout in the first place - even a basic fixed time and constant resistance workout requires numerous clicks and at least five minutes to set up.

Further frustrating matters is that fact that the web interface is the only way that the user is able to create a workout in the first place. That's a problem if you don't have an internet connection for example. The issue can be gotten around to some extent by 'favouriting' workouts (only available to Gold subscribers), which saves them on the desktop application for much easier access, but using the BKOOL will always require some sort of planning ahead – this isn't a unit you can just hop on and knock out 30 minutes of riding.

Ride Options

One of the BKOOL's strengths is the wide variety of workout types that can be created using the online system. Most basic of all, you have 'fixed time' or 'fixed distance' workouts which are based on an elevation profile which you chose from the significant online library. It is possible to modify these profiles in certain ways – such as changing wind strength, road surface or even gradient – and also add virtual riders who you can compete against to complete the route first. As the gradient of the profile changes, so does the resistance of the turbo unit, leading to a more lifelike feel.

If there aren't any profiles that tickle your fancy, it's possible to upload your own (GPX, CSV, PGMF, CAF and HRM2 formats accepted) from a previous ride or even one created from the numerous ride planning websites out there. The BKOOL software supports integration with Google Earth, so it's also possible to see your avatar track your progress along the route as you pedal. The quality of this footage is highly dependent on the coverage that Google Earth provides for that given geographical area.

There's also a velodrome mode, where you can specify a number of laps to complete or a specific ride time, and then watch as a little dot, that's you, moves around a 2D velodrome. It might not sound too interesting, but with the included lap splits, I found myself to be strangely drawn in by it. During this activity, the trainer unit is delivering a constant (quite low) resistance, so you'll have to use your gears to modulate your effort.

For many, the main attraction of the BKOOL is the option of riding along to the first person videos, with variable resistance matching what is on screen. The process of creating these workouts is the same as for a simple ride: select a certain time or distance you want to ride for, and the online system will come up with a number of videos which more or less fit your needs. You can also differentiate between flat, hilly and mountainous profiles.

The library of videos is very large, and the subscription based model (see below) means that you have an unlimited choice in what to watch. Most of the videos are from roads in Spain (where BKOOL is based), but classic climbs of the Tour such as the Galibier and Madalene, as well as some pretty horrific (in a good way) Italian climbs are included. If going for a 'fixed distance' type workout, the video playback speed is based on the effort you are putting out, so in some cases, these climbs can make for some very long turbo sessions indeed – perfect for getting in the miles during winter.

Included in the catalogue are a few videos taken in-race from the Vuelta a Espana, which put you right in the action. One in particular that I found interesting is taken from a team car following a rider around the time trial course. Being able to see the speed of the rider first-hand, and the line choices he makes going downhill was fascinating.

Finally, there is also the option of creating so-called 'multiplayer' workouts. These are essentially open sessions based of the workout types described above, that anyone can join and compete against each other in. If you need added motivation on a dreary winter evening, this may well just provide it.


Access to all the various features of the BKOOL is dependent on the level of package (Bronze or Gold) you pay for, which follow a subscription payment model.

The Bronze option is the default, free option when purchasing the BKOOL, and gets you access of all of the ride options except for the real-life videos and multiplayer, in addition to the training log aspect of the website.

The Gold subscription, available for 10 euros per month (or less on a yearly or half-yearly basis), adds in access to the full catalogue of real-life videos and the multiplayer mode, in addition to being able to 'favourite' workouts (useful if you want to use the BKOOL offline).

Compared to other first person style ride videos which can often run close to £100 for just a single video, the Gold subscription is significantly cheaper, and gives you access to a much wider range of footage. Also, the fact that you can subscribe on a monthly basis means that you can choose to spend the money in winter, when the turbo is likely to get most use, and then revert back to the bronze subscription in the summer when you can ride outside more often.

Desktop application

Much like the web interface, the desktop application – called BSIM and currently only available for Windows - is a little basic visually, but it does the job well. Workouts created using the web interface for this particular day (or those workouts saved as favourites) are downloaded to the application when it starts up, ready to be performed.

The BSIM software communicates with the physical unit using the provided USB stick, which uses the wireless ANT+ protocol. While the BKOOL includes a heart rate strap and cadence sensor as part of the package, use of this open protocol means you can use any of your own sensors (HR, speed, cadence but not power) that are ANT+, meaning you aren't tied into their proprietary sensors.

The software is also used to update the firmware on the trainer unit via USB cable. Firmware updates are very infrequent – I've only had to do one in nearly a year's worth of testing – so this isn't something which gets in the way too often.

In use

Once you've gone through the whole process of creating a workout online and firing up the desktop application, it's time to get down to the business of actually riding. Since the default setting during the workout creation is for warm-up: 'on', most rides will begin with a 10 minute period of very low resistance to get the legs spinning. At any point during this you can skip straight to the meat of the ride by stopping (rear wheel stationary) for three seconds. This is handy as I suspect most people will find this warm-up period too long, especially given that there are no onscreen prompts to help pass the time.

Once into the workout proper, a banner along the bottom of the screen will display your current and average speed, heart rate, cadence (assuming you've got all the relevant Ant+ sensors enabled) and energy expired, as well as an estimation of current and average power.

The integration of power data is notable, given that most other power enabled turbo trainers run at twice the price or more of the BKOOL. As noted previously, the power is estimated from wheel speed and the current level of resistance (derived from road gradient) based on a known power curve. However, the unit doesn't support any sort of calibration which is surprising given that variables such as tyre pressure will surely have a large impact on the estimated power.

Compared to the Power2Max power meter that I usually ride with (quoted accuracy of +-2%), the estimated average power from the BKOOL was usually within about 10% of so of the average power measured using the power meter. The differences between instantaneous power were less consistent however, and varied over the power range and with cadence also. And of course, the BKOOL estimate gets thrown way off if you happen to get out of the saddle at any point.

As such, the power aspect of the BKOOL trainer is more like an added-interest feature than something on which to base all your training around. At this price point, this level of accuracy seems quite fair.

At the top right of the screen you get a display of time taken and distance ridden, while the top left displays the performance of the virtual competitors you included when creating a 'single player' workout, or the performance of other users if you are in 'multiplayer' mode.

Overall, the display is well laid out and doesn't interfere with any of the action on screen when doing a first person video workout, for example. It lacks any sort of customisation, which will frustrate more data focussed users, but all the main metrics are there.

The ride feel of the turbo is good and does a remarkable job of replicating the sensation of actual riding. The transitions in resistance as the gradient changes are smooth and gradual which help deliver a more natural feel to the experience as you end of shifting gears in much the same way as you would on a proper road.

Adding to the real-life feel are the first person videos. The quality on these is decent but not HD outstanding – good enough to be able to easily identify each particular climb and provide some sort of mental distraction.

Playback smoothness is, in general, pretty good but it does come with a few quirks that can take you by surprise. When operating under the 'fixed distance' mode (where the playback speed is related to the effort you are putting in), it is possible to overrun the videos on the downhills (and the uphills too if you are some kind of monster) so that the resistance being delivered by the turbo unit doesn't correspond with what's being shown on screen.

This only happens if you really push things (300+ W) when going downhill and the on screen speed display turns red to notify you that you are exceeding the allowable speed. If you don't back off, it can lead to the slightly surreal experience of suddenly experiencing significant resistance associated with a steep hill, while the video is still showing you on a descent. Note that this problem doesn't occur when doing a 'fixed time' workout, as the video playback speed is effectively fixed in this case.

While the first person videos are great if your aim is just to get in some indoor miles, the fact that they are so lifelike means that they aren't great if you have a specific interval set to be doing. In this case, I found the best option was to create my own profile online, using a constant gradient of around 4%, and then using the gears on the bike to vary the resistance from there. The velodrome option can be used as a more controlled setting, but I found the resistance level to be a bit too low for some high power, low cadence drills.

Overall, the in-use experience is very good, and the wide range of possible workouts mean that it's easy to find distractions to help pass the time. There are other (more expensive) trainers out there that do a better job when it comes to power accuracy and integration of specific training tools, but for a unit to help get in the miles when the weather is atrocious, the BKOOL is ideal.


Though it does have a few quirks, the BKOOL is an excellent value turbo trainer that includes many features not usually seen at this price point, making it ideal for anyone who spends a lot of time riding indoors. test report

Make and model: BKool 1.0 Turbo Trainer

Size tested: n/a

Tell us what the product is for, and who it's aimed at. What do the manufacturers say about it? How does that compare to your own feelings about it?

The BKOOL is a computer controlled variable resistance turbo trainer, which includes first person videos to liven up any indoor ride. Though it does include a power readout, the BKOOL is more targeted towards the user who just wants something to pass the time on, rather than the more training-focused rider.

Tell us some more about the technical aspects of the product?

BKOOL Home Trainer Package:

-Quick adjustable release wheel lock

-Weight based tyre-roller contact

-Comes fully assembled

-Speed Output

-Power Output - up to 1.200 w

-Variable resistance to replicate inclines up to 20%

-Connectivity - ANT+


-Standard turbo quick release skewer

-Cadence sensor

-ANT+ USB Dongle

-Wheel Raiser Block

-Power adapter

-Complete unit dimensions 602 x 602 x 49 cm

-Base dimensions - 26 x 85 x 75 cm

-Weight - 14 Kg


-Power and cadence output display

-Auto resistance fluctuation up to 20% incline

-Create your own training/interval sessions on for use on your trainer

-Use your recorded outdoor ride profiles and routes on your home trainer

-Videos with incline resistance from Over 100 currently available with more added weekly

-Training data saved to profile

Rate the product for quality of construction:

Heavy steel tubing is used for the frame, while the plastic resistance unit looks reasonably strong. A bigger footprint would have made it more stable however.

Rate the product for performance:

The first person videos are the main reason for choosing the BKOOL, and they do a great job of providing interest when on the turbo. The power calculation may not be the most accurate, but you'll have to be prepared to pay a lot more if that is a priority. Overall, an excellent tool for simply putting in time of the turbo.

Rate the product for durability:

No issues so far with either the physical unit, or with the software.

Rate the product for weight, if applicable:

Nice and heavy which is good in this case as the BKOOL isn't designed to be lugged around to races etc. The fact that is needs to be plugged into mains limits it in this regard.

Rate the product for value:

Very good value, especially considering the cost of the Gold subscription which is only 10 euros per month. It really is much cheaper than most of the competition, while still being high quality.

Tell us how the product performed overall when used for its designed purpose

An excellent turbo if your focus is more on putting in time of the turbo rather than some super specific power-based workout.

Tell us what you particularly liked about the product

The massive library of first person videos and the subscription model used to access these.

Tell us what you particularly disliked about the product

A calibration protocol would be useful for improving the accuracy of the power calculations.

Did you enjoy using the product? Yes.

Would you consider buying the product? Yes.

Would you recommend the product to a friend? Yes.

Overall rating: 9/10

About the tester

Age: 22  Height: 190cm  Weight: 69kg

I usually ride: Canondale EVO Red  My best bike is:

I've been riding for: Under 5 years  I ride: Every day  I would class myself as: Semi pro

I regularly do the following types of riding: road racing, time trialling, cyclo cross, commuting, mtb,


For 5 years, racing was my life and I went all the way from a newbie bonking after 40 miles, to a full-timer plying my trade on the Belgian kermesse scene. Unfortunately, the pro dream wasn't meant to be and these days, you're more likely to find me bimbling about country lanes and sleeping in a bush on the side of the road.

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TimC340 | 8 years ago

BKool have significantly upgraded the firmware of this trainer (the 'classic') so that it's now fully ANT FE&C compatible, which means it can be controlled by compatible software - such as Zwift or TrainerRoads. This makes the device a whole lot more versatile, and far more useful for structured training now Zwift has a 'workout' mode - and it means I can do Sufferfest workouts properly! For me, that means I'll ditch the relatively expensive BSIM software (which works on pretty much all platforms these days), although I realise the social side of it may appeal to many. 

dino89 | 9 years ago

Part two of my Bkool experience:-
i have now used the Bkool for a while and thought i would now ride and upload a few of my own video recorded courses , i uploaded one and it worked well all up and running in approx48 hours, so i recorded a few more rides i like but so far its been 10 days and they are still waiting there review process , even thotugh they claim 48 hours i contacted them and they just said:-
"Your request has been solved""Please note that our users upload hundreds of routes everyday. "
so in other words the review of your ride is going o take as long as ..... well who knows !!??
this was the one feature i really liked about it !
next i come to the accuracy of my own ride ! well the uphills seem slightly harder ,but the downhills are showing speeds like 50mph where really you could never go more than 35mph ! average speeds are a lot higher than the rides i have completed on the road
videos take to long to approve ! accuracy of rides is way off what i experince on the road , customer service is beyond poor they claim "Your request has been solved" even though they ignore the question asked !..... wish my daughter had gone for the wahoo kicker now !
once again Bkool would you respond here and answer these questions and points i have raised?  7

Part one of my experience ...
my daughter bought both myself and her boyfriend one of these for xmas ,we have both experienced lost rides and crashes due to bkool server/software errors , whilst i think the product is good when it works the frustration of doing an hour plus rides only for it to be lost has now put me right off since xmas i have 3 complete rides just lost due to error uploading and at least 6 server crashes whilst riding , you get a

when my daughter was contacting bkool before purchasing the communication was nice and quick !! only to happy to talk once they have your cash...............nothing !!
i have sent 3 emails since regarding my issues i am having and info@bkool just ignore me , i have told them there will be reviews still they ignore me i, i will update if ever they can spare the time to address my issues !

i have found there customer service is non existent !
this is the last email i sent them  2

i must say i am very disappointed with the bkool and premium membership service , i have contacted you 3 times recently by the on site forms and got no response
my latest problem is i done a 10 mile Dartmoor ride just now and it failed to upload so logged in again and it failed again ! so logged out and in again nothing appeared to upload so checked on my profile and NOTHING has uploaded where has my ride/file gone or is it still on the laptop ?! this is becoming very frustrating as this is not the first time i have lost ride/points
one of my previous rides got to .1 of a mile from finish then had on screen message do you want to end this ride with only YES as an option i tried riding on but nothing it had crashed again very frustrating
my other emails were questions about the points not being added !
and how do i get my own ride in 3d sim word from gpx file
if i don't receive a response to this email i will not be renewing my prem membership and i will be placing reviews of my experience with bkool on trust pilot and Google and any other sites including bike forums as this in my opinion is just not good enough the product is great in theory but lack of any backup makes it pointless i will make others aware of my issues and lack of service at your hands
really fed up now more of my time probably wasted !!

maybe bkool will be more willing to respond here...........!

i should add along with the contact forms i filled out i also sent everthing to info@bkool .com as well so in all over 6 messages completely ignored

bike boy | 10 years ago

I have one too. Though the reviewer has omitted one of the biggest selling points. There is a large on-line bkool community, of which you can joins groups, set up group races and leagues - such as the Tour of Britain set up the UK Leagues group. This is the first turbo trainer I've ever owned which makes me look forward to getting back on (and improving my position in the Tour of Britain!).
I also own a Kurt Kinetic Road Machine which is an amazing trainer but the bkool is coming out the cupboard every time.

surly_by_name replied to bike boy | 10 years ago
bike boy wrote:

There is a large on-line bkool community....

The 21st century leaves me cold.

TimC340 replied to surly_by_name | 10 years ago

There may be a large online community, but finding like-minded groups is not easy. And finding the rare UK-based groups almost impossible! There's no directory; you have to search - unless you're lucky enough to find a group in the few featured each day. It seems to work best for clubmates who agree to form their own group. It's an interesting idea, but it's very poorly implemented compared to, say, Strava's clubs.

TimC340 | 10 years ago

I have one of these and generally find it excellent, but I agree that the time taken to set up a session is unnecessarily long. The pre-prepared set time sessions are a bit odd too.

The first-person video sessions are great, it's a shame there are few in UK yet - though there is now one that takes in the famous Lake District climbs. I hope more turn up soon. I like the feature that you can upload your own rides and then use them via the 3D playback on Google Earth. The detail is low, but it can be fun. It's a shame you can't use a GPS planner site to pre-plan rides to utilise this feature to try rides you'd like to do, and it would be great if you could use Street View in this mode - there's at least one iOS app that does this, so it is possible.

BKool are supposed to be developing an iPad version of BSim, which might be a bit more convenient. It would be good if their system was a bit more open so that you could use, say, Kinomap or Sufferfest sessions with the trainer as you can with the Wahoo Kickr (though that's over twice the price).

The gravity-based connection to the roller just doesn't allow standing efforts, and rapid accelerations while seated can cause wheelspin, but I don't think that's unique to this trainer. I find that steeper gradients demand a disproportionate effort, but maybe that's my inadequate fitness!

It's a good bit of kit, but a little effort on the software could make it great.

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