Topic starter
Ive got hold of a bike for my son, an apollo xc20 and want to turn it into something rideable.
I want to change the front chainring/sprocket to something a bit smaller to ease the gearing,(currently 40t). Would any bmx sprocket fit? Do they all have the same size hole and the tab in the same place?
Posted : 07/04/2013 12:52 pm