There are few more useful modifications to do to a motorcycle than replacing the brake lines with braided stainless steel lines. For the home mechanic, this task is relatively simple--but all work must be checked afterward by a professional to ensure that the machine is really safe.
Braided stainless hoses became popular on motorcycles during the 70s and 80s, particularly on the Japanese superbikes of the time. Motorcycles of that time came equipped with molded rubber brake lines which, for most street riding requirements, were perfectly adequate.
Braking System Improvements
However, many of the production superbikes were raced in various championships throughout the world, and one of the first upgrades for the racers was to fit improved components in the braking systems.
For the rider, stainless steel braided hoses proved to be an excellent upgrade to standard OEM braking systems. Besides protecting the vulnerable brake lines from external damage, the stainless braiding almost eliminated brake line swell (a condition where the brake hose swells under extreme pressure, effectively reducing pressure at the pad or shoe).
For the mechanic, stainless braided brake hoses are easy to clean and have a much longer life span than the equivalent rubber hose. Making a braided stainless line requires few tools and is a relatively simple operation.