Are there any plans to add more sizes of crank arms for the Zwift Ride?
Hi @Andre_Henning_BAA, Welcome to Forums. I’m Juan from Zwift.
I appreciate you taking the initiative to use this space to post your query. Currently, the Zwift Ride is equipped with a standard crank arm size. However, we’ve designed the bike to be adaptable to a wide range of riders through other adjustable components. You can adjust the saddle height, and handlebar stem length, and even move the handlebars in towards or away from the saddle to achieve a comfortable fit.
These other adjustments compensate and make the Zwift ride compatible for most people.
We recognize that every rider has unique needs, and your feedback is valuable to us. Although we don’t have specific plans for additional crank arm sizes right now, we are always looking for ways to enhance our products. I’ll make sure to forward your suggestion to our product development team for their consideration.
If there is anything else we can help you with, please do not hesitate to write us at support@zwift.com.
I also would like to see a choice of shorter crank arms. Personally, I need 160mm cranks to be comfortable and not having those has and will prevent me from purchasing a Zwift Ride frame, until they are available.
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How about using the type of cranks that supports multiple crank lengths all in one and that is being used by several producers of “wattbikes”?
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@Juan_Lopez10 The bike NEEDS adjustable crank length to fit all users…
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I would also only be interested if it had a choice of crank length, 175mm is way too long if you’re a shorter rider like me and ride with 165mm cranks. Adjusting other components on the bike can’t compensate for the pedal stroke.
I’m guessing a lot of people who purchase a frame such of this just wouldn’t perhaps be technical enough to look at crank length and would then just get on with it as they would if they went to a gym,and normally if they bought a smaller bike frame in a shop the adjustment would automatically be made for them - but for those of us who perhaps know a little bit more about bikes, it is important.
It’s 170mm, if that makes any difference to you
Hi all,
did anyone change the cranks already? It seems they are with custom spacing for the tensioner?
My right crank handle has no a worn out bearing and I requested support to replace them. Cant ride now. Any proposal would be helpful for alternatives which fit with the tensioner spacing correctly?
Thanks and ride on 
According to @GPLama the BB bearing is a 6004Z which is pressed into the frame. I have not serviced one of these bikes so I have no first-hand knowledge about it. Sourcing the bearings would be easy and replacing them probably not very hard for someone who has serviced a press-fit bottom bracket. The BB spindle appears to have a proprietary taper. It would be an interesting project to replace the cranks with something non-proprietary.
Hi Paul,
according to this video the cranks are easily replaced right?
But I fear which ones to choose in order to have the proper spacing fit vs the chain tensioner?
Maybe I just try normal 170mm Shimano cranks?
The spindle of the bottom bracket appears to be proprietary, based on the pictures - I haven’t had my hands on one yet. If you’re interested in investigating replacement I suggest taking the bike to a mechanic for input, and please let us know what you learn if you do that. Spacing will also be a concern.
In my eyes I would get rid of the plastic bracket around and just add new cranks but not sure if I am capable of doing that. Hence, I asked support what to do now with the worn out crank bearing.
Zwift isn’t going to tell you how to put some other cranks on it. I think a different bottom bracket spindle would be required. It would certainly be possible to put a bearing in it with a 24mm inside diameter which could potentially work with Shimano Hollowtech II cranks, and using a stack of spacers is possible with that type of crank to adjust the position of the right crank and the overall width. But those are questions for a bike mechanic who can see the bike and think about the changes. The right crank arm has to clear the chain tensioner while achieving good chain line to the cog in back. It’s hard to guess how difficult that would be.
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'Yes you are right. I wait for Zwift support because I want the crank replaced at least and then give the bike to a bike mechanic for replacement of the crank if possible 
Hi @Henning_Schulze and welcome to the forums! This is Alejandro from Zwift. I value you took ownership of using this space to post your inquiry. I couldn’t miss the chance to help you, and I located the ticket you opened with my Support Colleagues. I’ve gone ahead and replied, so please take a look at your inbox or spam/junk folder so that we can continue assisting you.
Would also consider the product if there was a choice of crank size, please consider it!
@Henning_Schulze How long have you been riding the Zwift smart bike? How long before the crank bearing gave out? This is concerning since I ride Zwift almost everyday since 2016. But I use my old Scott frame with Kickr. Through the years i was able to upgrade the Shimano groups and bottom bracket press in. I to was thinking about buying the smart bike frame from Zwift but if it can’t be serviced at home or local bike shop that is a big issue for me.
I may have to choose a Watt bike exactly for this reason. The Watt bike spindle that allows you to easily move the peddal for shorter and taller riders is brilliant. Make one that can go down to 150 and that would be a clear selling point for us who are closer to 5’ tall!