Price drop! Up to 45% discount on our 25/26 winter collection
Store logo
My Wish List
Freeride, Touring and Split experts
Worldwide shipping
Delivery within 1-3 days in EU, CH & NO*
Customers rate us: 9.6/10
Spark R&D
Arc ST Pro 25/26
€739.95
€639.00
Splitboard interface -10% discount
If a Ride interface (for descending) is not included with the binding your options will be shown below.
Splitboard crampons -10% discount
Crampons are not a necessity for a functional setup, however they are essential in a full backcountry equipment.
check-circle exclamation-circle dots-circle-horizontal
In short

The Spark R&D Arc ST Pro has undergone some changes. In addition to being extremely light (+/- 120 grams lighter than the Arc), the Arc Pro is also a lot stiffer. This saving and change in flex are mainly achieved by replacing the hardware, carbon in the highbacks and Pebax plastic in the straps. ST stands for 'smooth touring' where friction and wear are eliminated. The whammy bar (heel riser) is connected to the binding and ensures that the crampons always fully engage. The addition of the skipole adjustable heel riser makes this one of the most practical bindings in the field. This binding is the most lightweight Spark-binding and therefore ideal for those long days in the backcountry where every gram counts.

In detail

PERFORMANCE

The Spark R&D Arc ST Pro is a real weight watcher. The Carbon Reinforced Asym Rip N' Flip Highback is stiffer and lighter than the normal version. All hardware and the heel loops have been replaced by the ultra-light 7075 Aluminum. These parts are therefore no less than 65% lighter than the metal version. The character of the Arc ST Pro resembles that of the Arc ST, but the flexibility has decreased. The lightweight properties are mainly in the milled CNC baseplate, stripped of all unused material. The chassis sidewalls have been partially filled to enhance durability and strength. The bindings are equipped with Smooth Touring (ST) touring brackets, these brackets are made of a mix of aluminum and thermoplastics, which reduces friction and thus increases the lifespan.  

  • Arc ST Pro CNC Base Plate
  • Carbon Arc ST Pro Asym Rip 'N' Flip Highbacks
  • Aluminum Heel Loops
  • Hollow Pivot Pins

COMFORT

The Arc Pro and the Surge Pro are both equipped with the Full Pebax Plastic Pillow Line Straps. These straps are lighter, thinner and more resistant to cold than the normal Pillow Line straps. The straps are 3D-shaped from a single piece of plastic. This gives them a good lifespan and better deformability, so that they fit optimally on your boot. The ST Whammy Bar heel riser is built into the baseplate and ensures that the crampons, regardless of the heel riser, fully engage. The Whammy Bar has an ST overmold. During the overmold process, plastic is poured over the metal parts to make it stronger and more durable. Spark R&D uses time-tested Burton Buckles in all of their closures.

  • Pebax plastics Arc ST Pro Pillow Line straps
  • Ladders
  • Burton Buckles

TOURING

The Spark R&D Arc ST Pro uses the well-known Tesla T1 system. This system works with a heel riser in the baseplate and the Snap Ramp click system for converting interface. This makes it easy to mount the binding on Voile and Spark pucks.

  • Tesla T1 System

 

Snap To Tour

T1 bindings slide sideways into the offset touring brackets and are locked into place with the snap ramp.

Specification
Spark R&D Unisex Bindings Sizechart
Size US Men's US Women's EU Mondo (MP)
XS < 7 < 8 < 39 < 24.5
S 7 - 8.5 8 - 9.5 39 - 41 24.5 - 26
M 8.5 - 10.5 8 - 9.5 41 - 43 26 - 27.5
L 10.5+ 11.5+ 43+ 27.5+
Important details
Season 2025-2026
Flex Medium/Stiff
Weight 522gr