We offer a selection of aftermarket tyre valve caps and dust caps with rude, funny and downright insulting themes! We have valve caps to suit all types of wheels including cars, motorcycles, commercial vehicles and bicycles. As well as improving the look of your wheels, the main purpose of a valve cap is to protect the tyre valve itself from dust, dirt and moisture ingress whilst preventing tyre pressure from escaping. Valve caps are also often referred to as dust caps or valve stem caps.