Eight bikes and a number of tools have been stolen from Marin Bikes after one of the firm’s vans was broken into on Thursday night at Aston Hall Hotel in Rotherham.
The manufacturer had travelled to visit JE James Cycles but awoke to find the van severely damaged and a number of bikes taken.
JE James has published photos of the bikes on Facebook.
Anyone with information is asked to phone 01709-361-919 and ask for a manager or to contact police directly on 101.
Marin also posted about the incident on Instagram.
Last month Cycling Weekly suffered the theft of up to £150,000 of bikes and other kit from three vans parked overnight in Blyth, Nottinghamshire. That incident occurred only around 12 miles from Rotherham, as the crow flies.