A sleeve is a cylindrical tube used to cover, protect or support specific components or joints on a motorbike.
It is often used in areas such as the handlebars, fork, shock absorbers or exhaust system to provide an extra layer of protection or structural reinforcement.
Sleeves are made from different materials such as metal, plastic or rubber and can perform specific functions depending on the area of application, such as noise dampening, vibration containment or sealing joints.