The Spark Arc ST is a lightweight, high-efficiency splitboard binding designed for precision touring and confident all-mountain descents.

Built around a cut-out aluminium baseplate and Spark’s medium-flex Asym Rip ’N’ Flip highbacks, the Arc ST delivers a surfy, responsive ride while keeping weight to an absolute minimum. The smaller ankle strap with integrated flex window enhances lateral mobility without sacrificing support, making this binding equally capable in tight trees, deep powder, and variable alpine terrain.

At its core is Spark’s proven Tesla T1 system, combined with the latest Smooth Touring (ST) Technology. ST Brackets and ST Whammy Bars use a proprietary thermoplastic overmould bonded to aluminium components, reducing friction, improving durability, and increasing touring efficiency on long climbs.

Key Features

• Tesla T1 System: Tool-free, pin-less interface for fast, secure transitions between tour and ride modes
• Asym Rip ’N’ Flip Highbacks: Medium flex with redesigned left/right-specific ergonomics and tool-free forward lean adjuster
• ST Touring Brackets: Aluminium brackets with overmoulded thermoplastic bushings for smoother, longer-lasting touring
• ST Whammy Bars: Integrated climbing wires with smooth transitions between stowed, 12°, and 18° positions
• Pillow Line Straps: Lightweight, waterproof, one-piece construction with Burton-style buckles for reliability in all temperatures
• Puck Compatibility: Designed to work with all puck-compatible splitboard systems

What’s Included

• Splitboard bindings
• ST Touring Brackets
• T1 Heel Rests
• Mounting hardware
• Spark Pocket Tool

Additional Requirements: Spark Pucks or Spark Canted Pucks (sold separately).

Specifications

• Weight: 628g per binding (1.38 lb) / 1256g per pair – Medium
• Flex: Medium
• Compatibility: All puck-compatible splitboards

Note: ST Bindings are only compatible with ST Whammy Bars. Older Tesla T1 bindings require standard Whammy Bars. ST Bindings remain compatible with earlier Tesla brackets, and older T1 bindings are compatible with new ST Brackets.

Sizing is unisex, with Spark combining men’s and women’s charts into a single streamlined size range for all splitboarders.