Spark R&D Arc ST Pro 2026 Wiazania splitboard

Maximum performance at minimum weight – the Spark Arc ST Pro

The Arc ST Pro combines the trusted performance of the Arc ST with ultralight materials and precision-engineered Pro components. With titanium hardware, a carbon-infused highback, and CNC-optimised details, this binding enhances efficiency on the climb and delivers even more power on the descent – all while reducing noticeable weight. It’s designed for long tours, technical terrain, and riders who value every gram.

Highback
The asymmetrical carbon highback offers an ideal lateral flex and torsional stiffness balance. Its reduced weight provides a livelier ride feel without sacrificing support. The splitboard-specific forward lean adjuster enables quick transitions between hike and ride modes – even when wearing gloves.

Baseplate
The CNC-machined baseplate boasts weight-saving cutouts and a streamlined shape. The ST Whammy Bar and ST Touring Brackets provide smooth and efficient strides. Pro-level upgrades such as titanium axles and 7075 aluminium heel loops improve stiffness while decreasing overall weight.

Straps
The Pillow Line Pro straps showcase a slimmer profile and respond more directly. The minimalist Arc Pro ankle strap, featuring a flex window, is entirely waterproof and ultralight, and it perfectly fits the boot.