evo.com | Spark R&D Splitboard Crampons > As the saying goes, you don't really need splitboard crampons - until you do, and then you REALLY need them. Be prepared for those heinous icy sidehills with the Spark R&D D-Rex ST Pro Crampons, designed for use with Spark Dyno DH Hardboot Bindings. Smooth Touring (ST) Technology The previous brass axle has been replaced by a plastic-overmolded one for reduced friction. Dual Width Design Lets crampons nest together for better packability 7075 Aluminum Alloy Sizes Regular and Wide | Spark R&D D-Rex ST Pro Crampons 2026 - Wide in Black | Aluminum/Plastic