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Spark R&D Arc ST Splitboard Binding
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Spark R&D Arc ST Splitboard Binding
The Spark R&D Arc ST Splitboard Binding is a medium-flex soft boot binding for splitboarders who tour into trees and powder and want a surfy ride more than the stiffest platform. Medium-flex Asym Rip 'N' Flip highbacks and an Arc ankle strap with a flex window keep the ride loose, and Smooth Touring brackets overmold a thermoplastic blend through the aluminum to form low-friction bushings. At 628 g per binding in a Medium, with an ST Whammy Bar climbing wire at 12 and 18 degrees, the Arc ST suits tree skiing, powder days and long tours.
Is This the Right Binding for You?
CCBB Binding Ratings
CCBB Binding Profile
Why We Like It
- The cutout baseplate and medium-flex Asym Rip 'N' Flip highbacks, glass-filled for a softer feel, keep the Arc ST light and surfy.
- Smooth Touring brackets overmold a thermoplastic blend through the holes in the aluminum base, so the touring pivot runs quietly without brass bushings.
- The ST Whammy Bar is built into the baseplate and moves from stowed to 12 and 18 degrees with a pole tip.
- Individual left and right highbacks and a tool-free forward lean adjuster set up quickly for tour and ride mode.
Best Uses
- Tree skiing and powder
- Long tours
- All-mountain backcountry riding
- Riders who want a surfy feel
- Soft boot splitboarders, XS to Large
Mounting and Setup Advice
Spark sizes its bindings in one unisex line from XS to Large, so choose on boot size; the 628 g figure is for a Medium.
On the board side, the binding needs Spark Flat Pucks or Spark Canted Pucks, sold separately, and then works with any puck-compatible splitboard. If you are mixing hardware generations, ST bindings need ST Whammy Bars, while ST bindings run on older Tesla brackets. Bring your board in so we can set puck placement and stance.
Technical Specifications Manufacturer specs · Click to expand
Fit and Setup
- Weight
- 628 g per binding (Medium)
- Sizes
- XS, Small, Medium, Large
- Riser Positions
- Stowed, 12 and 18 degrees
- In the Box
- Bindings, ST Brackets, T1 Heel Rests, mounting screws, Spark Pocket Tool
- Sold Separately
- Spark Flat or Canted Pucks
Construction and Compatibility
- Touring System
- Tesla T1 with ST Brackets and snap ramp
- Baseplate
- Cutout aluminum
- Highbacks
- Arc Asym Rip 'N' Flip, medium flex
- Straps
- Arc Pillow Line, flex-window ankle strap
- Boot Compatibility
- Soft snowboard boots only. Splitboard soft binding; not compatible with ISO, GripWalk, pin-tech or telemark bindings or the boots that use them.
- Recommended Use
- Splitboard touring
Compare the Spark R&D Arc ST
Arc ST vs. Spark R&D Surge ST Splitboard Binding
The Spark R&D Surge ST Splitboard Binding uses a solid baseplate, stiffer highbacks and a wider ankle strap at 689 g per binding in a Medium. Choose the Surge ST for steep, fast riding; choose the Arc ST for trees and powder.
Shop Spark R&D Surge ST Splitboard BindingArc ST vs. Spark R&D Arc ST Pro Splitboard Binding
The Spark R&D Arc ST Pro Splitboard Binding keeps the Arc geometry with carbon-reinforced highbacks, Pebax straps and aluminum hardware, at 556 g per binding in a Medium.
Shop Spark R&D Arc ST Pro Splitboard BindingArc ST vs. Nitro Vertical ST Splitbindings
The Nitro Vertical ST Splitbindings use the same Tesla T1 baseplate with Nitro's Recline highback and straps for a more supportive ride. Both mount on Spark pucks.
Shop Nitro Vertical ST Splitbindings