Description
Tech Info
Size chart
2026 Spark R&D Arc ST Splitboard Bindings
The 2026 Spark R&D Arc ST bindings are ultralight, surfy, and built for flowing through the backcountry with smooth, efficient motion. Designed to shine in powder and trees while still handling technical terrain, they offer medium flex response with the advanced Tesla T1 touring system and Spark’s Smooth Touring (ST) upgrades. If you’re looking for a reliable binding that balances weight savings, comfort, and simplicity, the Arc ST is a splitboarding favorite for good reason.
Who are these bindings best for?
Riders who want a lightweight, playful binding for tree runs, powder laps, and long days in the skintrack.
Summary
| Ability | Intermediate – Advanced |
| Flex | Medium |
| Baseplate | CNC Machined Aluminum with ST Whammy Bar |
| Highback | Arc ST Asym Rip ‘N’ Flip Highback |
| Toe Strap | Pillow Line Toe Strap |
| Ankle Strap | Pillow Line Ankle Strap with Flex Window |
| Compatibility | Works with Spark Pucks (Flat or Canted, sold separately) |
| Warranty | 5-Year Manufacturer Warranty |
Tour Mode
- Smooth Touring (ST) Brackets – Overmolded thermoplastic bushings reduce friction and increase durability over traditional brass bushings.
- ST Whammy Bar – Integrated climbing wire with low (12°) and high (18°) positions; overmolded plastic allows smooth deployment transitions.
- Tesla T1 Snap Ramp – Slide bindings into offset touring brackets and lock in place with the snap ramp—no pins, no cables.
- T1 Heel Rest – Catches climbing wire securely in tour mode and supports optional Step Locker.
Baseplate
- CNC Machined Aluminum – Maximum cutouts for weight savings without compromising strength or performance.
- Puck Adjustment Cutouts – Allows stance tweaks with bindings mounted.
Highback
- Arc ST Asym Rip ‘N’ Flip Highback – Left/right specific with moderate glass fill for medium flex and lateral freedom.
- Tool-Free Forward Lean Adjuster – Easy toggling between ride and tour mode with no tools needed.
Straps
- Pillow Line Ankle Strap – Smaller around the boot with a flex window for agility and support.
- Pillow Line Toe Strap – Lightweight, waterproof, and form-fitting for either toe cap or over-boot use.
Buckles
- Bomber Buckles – Time-tested Burton design for reliable entry and exit.
- Cold-Resistant Thermoplastics – Ladders and adjusters retain flex across all temps for consistent performance.
Additional Features
- Puck Compatible – Works with all Spark Flat or Canted Pucks (sold separately).
- Ibex Crampon Compatible – Mounts easily onto ST Brackets for added grip in steep conditions (sold separately).
- Includes – Bindings, ST Brackets, T1 Heel Rests, mounting screws, and Spark Pocket Tool.
Size Chart
| Sizing | US Men's | US Women's | EU | Mondo |
|---|---|---|---|---|
| XS | <7 | <8 | <39 | <24.5 |
| S | 7–8.5 | 8–9.5 | 39–41 | 24.5–26 |
| M | 8.5–10.5 | 9.5–11.5 | 41–43 | 26–27.5 |
| L | 10.5+ | 11.5+ | 43+ | 27.5+ |
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