The new flagship of the AMP series of men's all-mountain performance skis is a bit of a departure for K2 in that it's designed for pure hard-snow carving performance primarily on groomers. (K2 has focused more on soft-snow performance in recent years, and still doesn't make a "race" ski.) The Bolt is narrow and damp for quickness edge-to-edge and confidence at speed on flat, firm snow. It's a wood-core (fir) metal-laminate Hybritech construction (sturdy vertical sidewall underfoot for edge grip, lightweight cap fore and aft for supple flex). Available only as a system, it comes with a 14-DIN Marker/K2 MX binding. K2's Speed Rocker combines 90 percent camber with 10 percent tip rocker to smooth the ride, enhance forgiveness and improve soft-snow flotation. ROX technology combines the forgiveness of tip rocker (K2 calls it Speed Rocker) with performance-enhancing Mod Technology (an independently acting secondary core, raised above the deck, works in conjunction with a strategically placed dampening module to lessen vibrations and improve edge grip) and extra carbon-fiber reinforcement placed so as to stiffen torsional rigidity.