I recently performed the following maintenance items at approximately 6500 miles: -Oil and filter change with AMSOIL synthetic -Coolant flush -Brake fluid flush (Front and Rear) -New fuel filter -New fuel pump -New fuel hoses -Professional Fuel Injector Cleaning by RC Engineering -New NGK Platinum Spark Plugs -I also performed a valve check on the bike at about 5000 miles and found all of them to be within factory tolerances with no adjustments needed.