evo.com | K2 Alpine Ski Boots > The K2 Recon X series features the same boot in three different flexes, with the K2 Recon X BOA 130 Ski Boots being the stiffest. Ideal for expert level skiers who prefer a classic cuff buckle system but want the comfort and convenience of the BOA(R) lower closure, the Recon X series features proven K2 heat moldable comfort. Last: 97mm to 100mm Adjustable with heat molding to fit a variety of forefoot widths P4 Heat Moldable Liner Velcro One Piece Flex: 130 A very stiff flex for advanced to expert skiers. 2 Adjustable Light Alloy | K2 Recon X BOA 130 Ski Boots 2027 - 27.5