Join Date: Jul 2009
Location: Province of Ontario, Canada
The front sprocket seems to wear much faster than the rear sprocket under normal use. Probably because of the tighter turning radius and smaller gripping area, fewer teeth. As a general rule I would say always replace the front sprocket with the chain and inspect and replace the rear if necessary at the same time. The rear will probably last two chain replacements if it is steel and not aluminum. It is easy enough to replace the rear sprocket independent of the chain, or at tire replacement time, so don't feel compelled to do this at the same time as the chain if it is only showing slight signs of wear.
Last edited by twowheels; 03-06-2017 at 08:49 AM.