Tired of rough roads wearing you out so are we and thats why made the ruby expert the frame is among the lightest that weve ever made and its been constructed from our superlative fact 10r 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 engineering sorcery however weve managed to keep the same fit feel and position that weve all come to love f