The only exception to this are the frames that were made in the company's Merida factory in Taiwan.

In April 1981, the company decided to drop the C and use only one letter, in the A to L sequence, to indicate the month of production, followed by the number indicating the year of production, followed by the sequential serial number. If the frame has a T in addition to the other letters and numbers, it is probably a Team Mongoose, a Team Minigoose or a Supergoose.Д¬heck for a three-digit designation that doesn't begin with the letter C. If the serial number on the frame has an X instead of a C, then it is likely a Super X model. A serial number from that time period might show CB8 above the five-digit serial number, which is sequential and indicates the number of frames produced in a particular series.Д¬heck for the letter X instead of the C with the serial number, or look for the letter T in front of, above or below the CB8 sequence.

The number 7 indicates 1977, the number 8 stands for 1978, and so on. After the letter designating the month of production, a number appears that stands for the year of production. The letter A stood for January, the letter B indicated February, and so on. The additional letter indicated the month the frame was produced. In May 1976, BMX Products began including a letter and a number with the C.

Look for a letter and number in addition to the C above the five-digit serial numbers. If there's a C above the serial number on your Mongoose, the bicycle was probably made in early 1976. The letter C stands for Chatsworth, the city in California where the Mongoose was made during the early years of production. Scan the area to see if the letter C is etched above the five numbers.

Gt bicycle serial number chart