Spark R&D Arc ST Splitboard Bindings in Green

The Spark R&D Arc ST Splitboard Binding in Green is an industry-leading favorite for powder chasers, tree-riders, and backcountry touring enthusiasts who prioritize agility, comfort, and effortless transitions. Built around Spark’s pinless Tesla T1 chassis with Smooth Touring (ST) technology, the Arc ST offers a medium flex profile that provides a surfy, playful feel underfoot while maintaining total reliability on technical skin tracks and high-alpine descents.

Milosport Shop Take

"If you want a splitboard binding that won't weigh you down during long backcountry ascents or force you into a stiff, unforgiving ride on the descent, the Arc ST is the absolute sweet spot. The Green anodized finish looks sharp against almost any splitboard deck.

What makes the ST generation so good is the overmolded thermoplastic tech in the ST Touring Brackets and ST Whammy Bars. The bracket bushings last up to four times longer than old-school brass bushings, and the climbing wires flip up effortlessly with your pole basket. Paired with the lightweight cutout baseplate and flexible Pillow Line straps, the Arc ST gives you a lively, surfy feel in deep snow without exhausting your legs on big touring days."

Technical Specifications

Under the Hood

• Tesla T1 System: Features a pin-free snap-ramp system for instant slide-and-lock transitions from tour mode to ride mode.

• Smooth Touring (ST) Tech: Spark overmolds a custom thermoplastic over aluminum in both the ST Touring Brackets and Whammy Bars, reducing pivot friction and extending bushing durability.

• CNC Machined Cutout Baseplate: Maximum baseplate cutouts shed unnecessary weight while maintaining high-grade structural strength and snow-clearing functionality.

• Asym Rip 'N' Flip Highback: Left/right specific highback featuring a tool-free Forward Lean Adjuster (FLAD) that flips quickly between a -13° striding position for touring and a custom downhill forward lean.

• Arc Pillow Line Straps: 100% in-house 3D molded, waterproof, one-piece straps. The Arc ankle strap features a central flex window for increased lateral agility and tweakability in powder.

Spark R&D Size Chart