[red71cheyenne]

Usually just the diode trio and brushes. Some kits come with bearing as well. Its cheaper than buying a new one or paying someone else to do it. Most come with instructions as well. You can also upgrade to higher amp output, but I wouldn't recommend going very high as it will affect performance. You'll have to rev the engine higher at startup to get it to start charging. Most parts stores sell the rebuild kits. Good luck and show us pics when you do it! Jeff.