Hoping I can find an answer here, currently have an aluminium entrance door with a cylinder knob handle.  Wanting to change it to a smart lock - rest of the house is smart and this is driving me nuts. 

The problem is that the backset I need is a 127mm, I rent so can’t really replace the door.  Is there a deadbolt extension backset available for any of the smart locks around, no one can seem to answer the question so I am assuming not.  I do have a latch cylinder 127mm backset extension on hand but pretty sure it wont fit a smart lock (I’m not really a chick that DIY’s this sort of stuff, can handle most other things).

Has anyone else installed a smart lock on a 127mm backset door? If so what did you install?

Thanks.