Campagnolo supplied parts to repair their components through 10 speed groups. This enabled those components to remain in use for many years. Beginning with 11 speed groups, only lever body assemblies were available for the shifters, which preserved just the old brake lever and hood. This is definitely less expensive than replacing both shifters,, but, is not the same as just replacing small parts inside the lever body.. Still,compared to other manufacturers of bicycle components, this is still much better.