
The easiest way to read the bike serial number is by using a bicycle serial number decoder for the specific brand of your bike. That said, the first digit/s usually indicate the year when the bicycle was made, the second set of digits representing the month, and the last few digits indicating the assembly and individual ID of the bicycle. Now, how do you read a bike serial number? The answer somewhat depends on the bike brand or manufacturer, since each one has their own metrics on how to assign these identifying digits onto a bike or bike part. It also helps the manufacturer in terms of inventory, and the repair shop in finding suitable parts that need replacement in your bicycle. What does a bicycle serial number mean, you ask? It’s a form of identification much like a fingerprint that tells you which of the thousands of the same bike is yours. Each and every bicycle has a unique serial number assigned by its manufacturer. Cannondale didn't always provide the actual frame size measurement in geo charts.First things first- what is a bike serial number? Simply put, a bike serial number, also called a bike frame number, is a string of numbers with anywhere between six to ten digits. Geometry almost certainly changed between those years, maybe not a ton, but enough to make one years 52 closer to another years 54 or vice versa.Īlso, just because 2007's were measured a specific way, that does not mean other years were measured the same way. However, CAAD9's came in many different flavors, and were made from at least 2007 (probably 2005 or 2006 for team/special order) through at least 2010. It looks like frame size is "measured size" + 2cm) Seat tube length matters far less than effective top tube length from a pure sizing vs. Hard to know which number is less useful. (However, this is basically meaningless bullshit from cannondale because a 58cm frame's "measured size" is 56cm. 2007 CAAD9's were measured from the center of the bottom bracket to the top of the top tube, along the seat tube to determine the "measured size" which is listed in the geo chart:
