way to wash a mountain bike is with a foaming spray that's safe for all components and surfaces, including its drivetrain. Once clean, be sure to lube up regularly in order to prevent rust and premature wear and tear. Muc-Off's kit of soft washing brushes and detail brushes come with various bristle stiffnesses to maximize cleaning effectiveness, and their foaming trigger spray... https://ebikereviewerdentinygraves.blogspot.com/2024/10/5-best-mtb-bike-cleaners.html