Intended to prevent tire deflation in case of puncture caused by perforation, shock or pinching Mousse insert replaces the inner tube and is designed exclusively for off-road competition Fitting pressure and stiffness are equivalent to an air pressure of 13 psi First and only mousse to offer a 2 year shelf life Special mousse grease included in box Made up of a honeycomb structure Not for highway service (NHS). MOUSSE 140/80-18