A modern Bicycle is deceptively concept machine, that's without including Electric Bikes into the conversion. In order to extend lifetime and improve functionality of your bike it is essential to keep it maintained. For the most basic maintenance you need a bike pump, set of brushes, drivetrain cleaning spray, chain cleaning tool, grease/oil and a set of hex wrenches. If you enjoy tinkering with your pride ride you may want to look at the tool section or tool hire to get the more professional selection.