AbsoluteBlack Oval Road chainring ovality & shifting

Описание: Brief video of the new AbsoluteBlack oval road chainrings to show their ovality (shape) in a pedalling motion as well as the up and down shift quality.
View more info on the AbsoluteBlack oval road chainrings on Life Is A Beautiful Detail at http://lifeisabeautifuldetail.com/blo...