Overview:
You can use any lock from any brand provided that they fit these dimensions of the storage compartment listed below for our RUSH/CTY Models:
Length: 206mm
Width: 42mm
Height 70mm (average-tapered)
Volume: 620 cubic centimeters
While most locks will fit externally on your Serial 1 eBike, listed below are the only locks that we have had an opportunity to confirm will fit into your storage compartment on the RUSH/CTY models. All are made by Abus.
BORDO-Lite-Mini-6055-60
BORDO-6000-90
BORDO-GRANIT-XPlus-6500-85
We have not had an opportunity to test other branded locks. If you are interested in researching more options, use the above dimensions to aid in your search.