The Borealis Koi Split is a splitboard built for powder. Optimised for deep snow and open faces, it prioritises float and edge-free riding over resort versatility.
Who is the Borealis Koi Split for?
The Koi Split is best suited for advanced riders weighing 55-85 kg. It rides best in powder, tree-runs, surf-inspired, for splitboarders who want one board that handles these conditions.
Construction & specs
- Shape: Directional Tapered
- Profile: Powder Camber
- Base: Sintered DS4001
- Flex: 7/10 (medium-stiff)
- Sizes: 156cm · 160cm
- Rider weight: size dependent — see size guide below
Available Sizes
| Size | Best suited for |
|---|---|
| 152cm | Average height, versatile all-rounder |
| 156cm | Average height, versatile all-rounder |
| 160cm | Taller riders, more stability and float |
Choose a smaller size for a more playful, manoeuvrable feel in tight terrain. Go larger for more float in deep snow and higher-speed stability on longer descents.
Available Sizes
| Size | Best suited for |
|---|---|
| 156cm | Average height, versatile all-rounder |
| 160cm | Taller riders, more stability and float |
Choose a smaller size for a more playful, manoeuvrable feel in tight terrain. Go larger for more float in deep snow and higher-speed stability on longer descents.
Ride Feel
Het ‘Powder Camber’ profile — flinke front rocker, vlakke zone under voeten and positieve camber direction de tail — gives the Koi zowel float in deep powder als stability op hardere ondergronden. Despite the stiff flex and torsion, the board turns surprisingly easily in tight terrain.
Verdict: Borealis Koi Split
The Koi Split is one of the more distinctive shapes on the market: a pronounced fishtail and heavily tapered, volume-shifted nose generate surf-like float in deep snow. Compared to the Jones Hovercraft Split, the Koi is even more powder-dedicated and even less effective on firm snow or technical terrain. The carbon laminate keeps it light. Buy the Koi Split if you ride in a coastal mountain range with a reliable, deep snowpack and want a board that feels fundamentally different from traditional directional shapes. Skip it if your region has variable snow conditions or if you regularly deal with firm or icy terrain — the lack of edge grip in non-powder conditions is a significant limitation.
→ View all Borealis splitboards ・ → Compare powder splitboards
Frequently Asked Questions
What skill level is the Borealis Koi Split for?
experienced. Beginners can ride it but won’t fully benefit from the responsiveness and flex this board offers.
What rider weight suits the Borealis Koi Split?
The mid size targets riders of 55-85 kg. Across all sizes the Koi Split covers 45-100 kg — choose the size that matches your weight.
What terrain suits the Borealis Koi Split?
Powder and tree-runs, surf. For pure powder days or competitive alpinism there are more specialized options, but as an all-rounder the Koi Split scores well.
