Mirinda "Rinny" Carfrae is the defending Ironman World Champion, back to stop all challengers from encroaching on her reign, which was stamped with authority last year with her record-setting performance. She is one half of triathlon's resident power couple, along with husband Tim O'Donnell, a respected champion in his own right. Here we detail her impressive Felt IA bike, appointed very much like her 2013 rig, but with a new fluo green paint job. We also take a look at how it compares to Tim's Trek Speed Concept. Enjoy the gallery!