1yamadog - I talked to my dealer with the same questions, and yes, if the shock package is purchased later, you will be able to have the adjustability on the handlebars, cause the wiring is there already. The only thing is the hole will be there for the RA adjuster, but could possibly be covered with the support brackets (for the tunnel), from a GT? Think about it. I will be getting the blue ER also, but you might want to keep the RA, due to it seems like it has more adjustability than the ohlins.