Originally Posted by sers
The stock drivetrain on the IRO is the weakest link, especially if you ride it a lot. While a new chainring might do the trick, money spent on an upgraded drivetrain is mone well spent.
+1 I just went through and picked apart my drivetrain to figure out a clicking noise i was having...it turned out to be the chainring although i did replace the BB too, which ended up needing to be returned for non compliance w/ my crank arms...but alas it was that stupid chainring... and im done rambling