Ski: 2025-2026 Moment Siren 104, 176 cm
Available Lengths: 170, 176 cm
Blister’s Measured Tip-to-Tail Length (straight-tape pull): 174.6 cm
Stated Weight per Ski (176 cm): 1835 grams
Blister’s Measured Weight per Ski (176 cm): 1840 & 1848 grams
Stated Dimensions: 137-104-124 mm
Blister’s Measured Dimensions: 137.5-103.5-124 mm
Stated Sidecut Radius (176 cm): 16.5 meters
Measured Tip & Tail Splay (ski decambered): 51.5 mm / 28 mm
Measured Traditional Camber Underfoot: 6.5 mm
Core Materials: poplar/pine + carbon & fiberglass laminate
Base Material: recycled carbon-infused sintered UHMWPE
Factory Recommended Mount Point: –8.0 cm from center / 79.3 cm from tail

[Editor’s Note: Our “First Looks” are our way of getting you information sooner on some of the products we’re reviewing, including our measured specs and the details from the manufacturer. Once we’ve started testing a given product, we detail our on-snow impressions in our Flash Reviews and our annual Winter Buyer’s Guide. When we’re able to spend extensive time testing a given product, we publish our in-depth Full Reviews and Deep Dive comparisons.]
What Moment says about the Siren 104:
“There’s been a hole in our women’s lineup for a few years now, one that could only be filled by a more directional, powerful, and composed platform. While most things are kept under wraps until the Fall, we just couldn’t help ourselves.
Built upon the foundation of the Countach, the Siren is both powerful and playful, with more composure and stability than anything else in our women’s lineup, allowing it to cut through chop, grip with precision, and carve with an instinctive ease. The poplar / pine core hums with energy, delivering a smooth yet responsive flex, while the low rocker and dual radius sidecut pull you effortlessly in and out of each turn, striking the perfect balance between control and release.
Whether you’re threading trees, dropping into a steep line, or arcing down wide-open groomers, the Siren answers every move with confidence and grace. A much needed compliment to other skis in the lineup, the Siren is here for choppy conditions, high speed days, and to inspire confidence when it’s time to show the boys what’s up.
From the depths of legends, the deepest of secluded trees, the farthest reaches of the mountains, the Siren sings its song. Will you resist the temptations, or answer the call?”— Moment Skis
Flex Pattern
Here’s how we’d characterize the flex pattern of the Siren 104:
Tips: 6.5-7.5
Shovels: 7.5-8
In Front of Toe Piece: 8.5-10
Underfoot: 10
Behind the Heel Piece: 10-8.5
Tails: 8-6.5
Our Reviews of 300+ skis: The Blister Winter Buyer’s Guide
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