You can nowadays find lots of replacement pieces in the stores, most of which are good quality, but sometimes you buy rubbish without knowing, even when you pay the price.... an example: bike pedals for mountain bikes. life expectancy for daily with a man: 1.5 year. not more. people will say that i am raugh... but maybe not that much knowing that the original pedals of the new bike held 15 years. it was in metal, not plastic.