Sprint RS 2011 ICE Compact Flat Twist Fold system Avid BB5 disc brakes 27 Speed SRAM X7 Avid V brake Fire Red, ....... Sprint RS X 2012 Pluss 2014 FRS X All of the features of the Sprint RS with the following upgrades: Schwalbe Kojak tyres BB7 disc parking brake Ink black with x-type graphics