If one examines the Rear Drive parts fiche for the 2014 RTs one will see that the original design had a 28 tooth black sprocket, a separate additional outer flange held to the sprocket by six bolts and the flanged bolt and washer that anchored the whole assembly to the clutch shaft. Now why do you think our northern brethren changed a winning, trouble free system to a single sprocket, flanged bolt and washer? Shekels, dollars, quid, my friends, or whatever other coin of the realm one wants to use.