OGSO Koiryu — Review
Overview
The OGSO Koiryu is the Chamonix boutique's new-school fishtail freestyle ski from their Scurry Odyssey Series, designed for playful snow riders who want a shape that surfs powder while carving groomers. It uses BEELINE camber with a long, deep fishtail tail, a strong poplar core, upper and lower Power Plates and laminate binding reinforcement. Verified sidecut per length: 128-86-117 mm at 162 cm (13 m radius, 1550 g), 130-87-119 mm at 172 cm (14 m, 1650 g), 130-88-117 mm at 182 cm (15 m, 1750 g).
On-snow performance
At 86-88 mm underfoot with a compact 13-15 m radius, the Koiryu is a playful shape optimized for quick edge changes on piste and slashy release in soft snow. The 6 mm underfoot camber (highest in the OGSO line) delivers strong rebound out of turns. The deep fishtail tail glides through powder and encourages tail-driven pivots. Weights of 1550-1750 g are moderate for the segment — not ultralight but manageable for daylong resort use. This is a freestyle-leaning shape rather than a mainstream all-mountain ski.
Construction & specs explained
Core: strong poplar wood with upper and lower Power Plates and laminate binding reinforcement for edge control. BEELINE camber with 6 mm underfoot camber, short tip (120 mm) and fishtail tail (80 mm). Sidecut varies per length (see above), radii 13-15 m. Available lengths 162, 172 and 182 cm. Manufactured at Kästle CZ.
Who it's for & comparisons
Compared to the Line Sakana, a 105 mm surfy fishtail ski, the Koiryu is much narrower and more piste-friendly with faster edge changes. Against the Volkl Blaze 94 it is narrower and more freestyle-oriented, with a fishtail rather than a directional shape. Compared to the Head Kore 94 Ti the Koiryu is much more playful and less directional — the Kore is a piste-driven all-mountain ski, the Koiryu a fishtail freestyle shape.
Pros, cons and verdict
Pros
- Verified per-length data across all three lengths (dimensions, radius, weight).
- BEELINE camber with 6 mm underfoot camber delivers strong rebound out of turns.
- Fishtail tail encourages playful tail-driven pivots and powder release.
- Compact 13-15 m radius makes short-turn skiing effortless.
Cons
- 87 mm waist limits real powder float versus wider freestyle shapes.
- Fishtail tail is not for skiers who want a directional or all-mountain feel.
- Three lengths (162, 172, 182 cm) — no options for very small or very tall skiers.
- Premium boutique pricing versus mainstream freestyle skis.
Verdict: A boutique Chamonix-designed 87 mm fishtail freestyle ski for playful skiers who want a shape that surfs soft snow while carving groomers. Best matched to a technical, playful style rather than piste charging or big-mountain freeride.

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