56cm Cross Check. I haven't done much other than change the saddle, tires, stem, and added a third chain ring. I love my bike so much. I just went out for a ride today for the first time in months. I had a knee injury in September and haven't been able to ride more than a few blocks since then but it was so nice out I couldn't resist. Its my commuter, road bike, touring bike, gravel/dirt path bike, everything bike. I look at other pretty bikes and sigh because I don't need them, my CC does it all (all that I want to do right now that is)