Burglars broke into a commercial building on Long Leys Road and made off with a number of electric bikes.
Lincolnshire Police are appealing for witnesses and information following the theft at Monarch House overnight between November 9 and 10.
A force spokesperson said: “We are asking specifically for witnesses and residents in the Long Leys Road area to come forward.
“If anyone witnessed any unusual behaviours on Long Leys Road behind the Curtis factory, any suspicious vehicles, or anything that may help with this investigation during that time period, we are asking them to come forward.
“If any residents have any CCTV that covers Long Leys Road, or witnessed anything suspicious, can they also please come forward.”
Anyone with information is asked to call 101.