What is a chassis number?

Every bike and trailer we make has its own unique number, called a frame number. Our frame number consists of our own manufacturer's mark "CS," a serial number, and a year mark. We keep track of all our models using the frame number.

Where is the chassis number located?

The frame number is located in different places on our cargo bikes and trailers. On the trailers, the frame number is stamped on the side of the bottom frame. On the yellow galvanized steel frames, we have stamped the frame number on the left side of the plate between the top and bottom tubes. On aluminum frames for rearDrive or frames for cargo bikes without a motor, the frame number is stamped on a plate under the crank box. On midDrive aluminum frames, the frame number is stamped on the seat tube just above the motor housing.