FAQ Group: Frame number

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.

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.

If you send us your frame number, we can give you the exact date when your model was manufactured. You can also find the year yourself by looking at your frame number. The last letter in the frame number indicates the year of manufacture. You can use the following guide to find out when your model was manufactured. The letters A-Z are used, except for I, O, and Y.

1985: A
1986: B
1987: C
1988: D
1989: E
1990: F
1991: G
1992: H
1993: J
1994: K
1995: L
1996: M
1997: N
1998: P
1999: R
2000: S
2001: T
2002: U
2003: V
2004: X
2005: Z
2006: A