Basically, “full carbon road forks” means the whole fork uses carbon construction. Generally, this also includes the construction of steerer tubes. It is not surprising that such forks are much lighter than any other type of fork. This also translates into a significant improvement in riding comfort and handling. However, there are aluminium bicycle forks that are many times cheaper than full carbon forks that provide a decent level of comfort and performance. So, unless you are a professional who is trying to get every bit of performance improvement you can, it is not worth investing in an expensive carbon road fork.