The first prototypes were made by Kastan Engineering toward the end of 1991. As with all my other cracks, this one holds up too. I spent quite a bit of time looking into the Hoffman serial numbers on a few of my bikes as well as checking against other Hoffman BMX owners to see if my serial number crack was right. This guide may not work for all Hoffman Bikes BMX's built between this time. The serial number guide will help date Hoffman BMX bikes made between approximately 1992 and 2010. This post is intended to be used as a guide to help you read the Hoffman BMX serial numbers and find out what year your BMX was built and sold. The date will help you find the correct decals for your bike and also help to figure out what your Hoffman BMX is worth if you are going to sell. If you are looking to find out how to tell the age of your old Hoffman Bikes BMX, here's a quick how-to guide. This guide covers most, but not all mid-school and new school Hoffman BMX bikes. I also have guides for Mongoose, GT and Redline and Haro BMX serial numbers.įinding out what year your Hoffman BMX was made, is the first step in any restoration.