Where can I find the serial number on my bike? Updated June 10, 2022 16:00 It's on a silver-colored sticker on the rear dropouts, under the barcode. Related articles Do ebikes work in cold weather, rain, or on hills? Bike Security: Protecting Against Loss or Theft What is the difference between Class 2 and Class 3 ebikes? Are these bikes legal in my state? I've recently had a flat tire, is it covered under warranty? Comments 4 comments Sort by Date Votes Jim July 20, 2021 00:56 Serial number not there 0 Matt Garcia August 31, 2021 13:35 Edited I found it on the post part of the frame near the sprocket. 0 Kathryn Clark May 28, 2022 19:58 On the Kepler 52V Fat tire bike, the serial number needed to register on the Zoom warranty website is on the right front fork. The sticker says Zoom on it. There is a number on the frame near the sprocket, but the Zoom website does not recognize this as a serial number. 0 Shawn Boatright June 03, 2022 06:42 On the Kepler, I found the serial number underneath the crank shaft 0 Please sign in to leave a comment.