On this episode of On Two Wheels, Motorcyclist magazine's Ari Henning and guest test rider Zack Courts saddle up in a bid to find out which among the 2012 Aprilia Tuono V4R and Ducati Streetfighter S is the baddest super naked on the planet...

Click here for full story... (http://www.fasterandfaster.net/2012/05/naked-brawlers-2012-ducati.html)