We agree completely agree with the comments about the Shimano drivetrain. We updated our spec to the new clutched derailleurs and a double crank on the Race and Pro kits as soon as we could, unfortunately the bike we provided for this test had last years Race kit. The clutch derailleurs are really awesome and a great improvement, rarely if ever is a chain dropped and chain slap is nearly nonexistent. -Nate Espinosa Yeti Cycles