Here is an email i got from an actual employee of gt.
Gt bike serial number location.
Turn your bike upside down and record the number.
If the bike frame was manufactured at the santa ana ca facility the first three or four digits of the serial number should be letters abbreviating the model or size of the frame such as xl xxl cr24 or something like that.
Vintage and older gt bikes may have serial numbers placed on other areas of the frame such as the seat stays next to the rear dropouts or the head badge.
This is not always the case and there will be some bikes that do not fit into this formula.
The next part of the serial number is eight numeric digits.
The serial number below can be read in the same way.
Most bicycles have their serial number engraved beneath their bottom bracket but sometimes serial numbers are found in other places.
July 1989 built bike.
Gt bicycles remains true to sharing the stoke on two wheels which the brand was founded on because after all you can t.
Since 1972 gt bicycles has proudly been developing bikes for every type of rider with a consistent mission.
Gt stands behind all of its products.
Gt bicycles are warrantied against manufacturing defects in materials or workmanship.
That mission is the same reason everybody throws a leg over their very first bike pure fun plain and simple.
The second two digits the number 88 refers to the year 1988 and the month of build is referenced as 08 for august.
Modern gt bikes feature the bicycle s serial number on the underside of the frame and will be accompanied by a bar code.
Gt serial numbers are usually found stamped on the bottom of the bottom bracket of your bmx.
If there is no serial number near the cranks you should check other common places including the front headset or rear stays.
Generally the year was stamped as the first part of the serial number.
Here are some examples of where and what to look for.
For example my 1989 haro invert has a serial number h8808xxx.
The bottom bracket where serial numbers are typically located is circled.
For mid school gt bmx bikes built in taiwan through most of the 90 s with a serial number that begins with 4 letters before the series of numbers.
A serial number on the underside of a bottom bracket.
