Endorsed by hard chargers everywhere, the Spark R&D Surge ST Splitboard Bindings have undergone sufficient change to warrant an upgrade to smooth touring status. Spark's own overmolding process puts low-friction, high strength plastic over existing metal components to reduce friction and increase durability pretty much anywhere the binding moves, making touring smoother, easier and quieter. Still the stiffest of the Spark offerings, the Surge ST also has a re-designed Asym highback and overmolded ST Whammy Bars where the bar meets the baseplate. A no-compromise approach to the riding after the approach.