So long zertz its been fun but we found someone better for us the all new roubaix pro with shimano di2 represents the future of road bikes in our opinion and in a second youll see exactly why the frame is the lightest that weve ever made and its been constructed from our top end fact 11r carbon fiber its stiffness levels are also off the charts and compared to the sl4 iteration of yesteryear youll experience a whole new faster and more efficient geometry through some engineerin