Spark R&D Arc ST Splitboard Binding Splitboard - Splitboard Bindings - Softboot Bindings Spark R&D XSmall Green
Spark R&D Arc ST Splitboard Binding Splitboard - Splitboard Bindings - Softboot Bindings Spark R&D XSmall Gold
Spark R&D Arc ST Splitboard Binding Splitboard - Splitboard Bindings - Softboot Bindings Spark R&D XSmall Black
Spark R&D Arc ST Splitboard Binding Splitboard - Splitboard Bindings - Softboot Bindings Spark R&D XSmall Green
Spark R&D Arc ST Splitboard Binding Splitboard - Splitboard Bindings - Softboot Bindings Spark R&D XSmall Gold
Spark R&D Arc ST Splitboard Binding Splitboard - Splitboard Bindings - Softboot Bindings Spark R&D XSmall Black
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Spark R&D Arc ST Splitboard Binding

$522.00 $653.00
Size
Color: Black
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Boot Fitters Advice
Description

The Spark R&D Arc ST is a 628 g medium-flex soft boot splitboard binding with Tesla T1 touring, Smooth Touring brackets and an ST Whammy Bar at 12 and 18 degrees.
Tech Specs
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Medium-Flex Soft Boot Splitboard Binding

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.

Specs Verified Ratings and setup guidance verified against manufacturer specifications.

Is This the Right Binding for You?

Best For
Splitboarders who want a light, medium-flex binding for trees, powder and long tours
Consider Another Binding If
You ride steep, fast lines on a stiff board and want maximum response, or you ride hardboots.

CCBB Binding Ratings

Uphill Efficiency
5/5
628 g per binding in a Medium
Descent Security
4/5
Medium-flex highbacks, flex-window ankle strap
Transition Speed
5/5
Tesla T1 snap ramp, no pins or cables
Serviceability
5/5
Wear parts sold as spares

Rating scale: 5 = top of its class, 4 = excellent, 3 = good, 2 = specialized or below average, and 1 = limited.

CCBB Binding Profile

Brake WidthNone. Splitboard bindings do not use brakes
Riser HeightsStowed, 12 and 18 degrees
Boot CompatibilitySoft snowboard boots only
AdjustabilityTool-free forward lean adjuster
Mount PatternSpark pucks, sold separately

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.

Mounting and setup guidance reviewed by CCBB splitboard staff. Confirm interface and stance against your board before drilling.

Technical Specifications Manufacturer specs · Click to expand

Fit and Setup

Weight628 g per binding (Medium)
SizesXS, Small, Medium, Large
Riser PositionsStowed, 12 and 18 degrees
In the BoxBindings, ST Brackets, T1 Heel Rests, mounting screws, Spark Pocket Tool
Sold SeparatelySpark Flat or Canted Pucks

Construction and Compatibility

Touring SystemTesla T1 with ST Brackets and snap ramp
BaseplateCutout aluminum
HighbacksArc Asym Rip 'N' Flip, medium flex
StrapsArc Pillow Line, flex-window ankle strap
Boot CompatibilitySoft snowboard boots only. Splitboard soft binding; not compatible with ISO, GripWalk, pin-tech or telemark bindings or the boots that use them.
Recommended UseSplitboard 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 Binding

Arc 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 Binding

Arc 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

Common Questions

Who should buy the Spark R&D Arc ST Splitboard Binding?
The Spark R&D Arc ST Splitboard Binding suits splitboarders who ride trees and powder and want a light, surfy binding. It weighs 628 g per binding in a Medium, with medium-flex highbacks and Spark's Tesla T1 touring system.
What boots and boards work with the Spark R&D Arc ST Splitboard Binding?
The Spark R&D Arc ST takes soft snowboard boots only. It is a splitboard soft binding and is not compatible with ISO, GripWalk, pin-tech or telemark bindings or the boots that use them. On the board side it needs Spark Flat Pucks or Spark Canted Pucks, sold separately, and then works with any puck-compatible splitboard.
Do I need to buy anything else?
Yes, pucks. The Arc ST comes with the bindings, ST Brackets, T1 Heel Rests, mounting screws and a Spark Pocket Tool. Spark Flat or Canted Pucks are sold separately.
Will these work with my older Spark parts?
Partly. ST bindings work only with ST Whammy Bars, so a standard Whammy Bar from a 2021/22 or older T1 binding will not fit. ST bindings do run on older Tesla brackets with brass bushings, and older T1 bindings run on ST brackets.
What riser heights does the Arc ST have?
Stowed, 12 degrees and 18 degrees, set with the ST Whammy Bar built into the baseplate.
How much does the Arc ST weigh?
628 g per binding in a Medium. Other sizes differ.

Our Verdict

The Spark R&D Arc ST Splitboard Binding is Spark's surfy, medium-flex binding: cutout baseplate, glass-filled Asym highbacks and a flex-window ankle strap at 628 g per binding in a Medium. Smooth Touring brackets and the ST Whammy Bar make the touring side quiet and quick. Riders who want a stiffer binding should look at the Surge ST; riders who spend their days in trees and powder should start here.

Frequently Asked Questions

What foot shape works best?

Low- to medium-volume feet with a lower instep and secure heel.
Does it punch well?

Minor boot fitting is possible, but race boots are less forgiving to modify than heavier Grilamid touring boots.