Fit + Tech
Union Source FC Unisex Snowboard Binding 2027
2 Sizes (M, L)
Unisex
Pro-Level Freestyle
Size Chart (Boot Compatibility)
| Size | US Men | US Women | US Kids | UK | EU | Mondo |
|---|---|---|---|---|---|---|
| S | 5.5 - 7.5 | 6.5 - 8.5 | 5.5K+ | 4.5 - 6.5 | 37 - 40.5 | 23.5 - 25.5 |
| M | 8 - 10 | 9 - 11 | — | 7 - 9 | 41 - 43 | 26 - 28 |
| L | 10.5 - 13 | — | — | 9.5 - 12 | 43.5 - 46 | 28.5 - 31 |
| XL | 13 - 15 | — | — | 12 - 14 | 46 - 48 | 31 - 33 |
Size chart data pulled directly from the product page (boot compatibility for the binding sizes M, L). The Source FC comes in 2 sizes (M, L) — M fits US Men 8-10 / US Women 9-11 / EU 41-43, and L fits US Men 10.5-13 / EU 43.5-46. Also available in S (US Men 5.5-7.5) and XL (US Men 13-15) for some configurations. Features the revolutionary no-mounting-disk design for the most direct board connection.
Component Breakdown
No Mounting Disk
"We've removed the mounting disk" — the Source FC's revolutionary design eliminates the traditional mounting disk entirely. This creates the most direct connection between binding and board, removing the weight and complexity of a standard disk while delivering more direct energy transfer.
Reduced Baseplate Height
"Reduced the baseplate height" — the Source FC features a significantly lower baseplate profile. The lower stance brings the rider's foot closer to the board for a more natural feel, better energy transfer, improved leverage, and more direct response.
Hundreds of Grams Lighter
"Shaved off hundreds of grams of excess material" — the Source FC's no-disk and reduced-height design creates one of the lightest bindings in Union's lineup. The weight savings reduce foot fatigue over a day of riding and make the binding feel more nimble and responsive underfoot.
Direct Energy Transfer
"Completely changed the way that the rider's energy is transferred from the body to the snowboard" — the Source FC's no-disk design creates the most direct connection between binding and board. Energy transfer is more efficient, the feel is more authentic, and the overall riding experience is more connected.
Union Quality
Built by Union — the same brand trusted for premium bindings and gear — the Source FC reflects the company's commitment to innovation, quality, and pro-level performance. The revolutionary no-disk design is built to handle the demands of the most advanced riding.
Mounting & Compatibility
- Mounting: Integrated board hardware required (no traditional mounting disk)
- Binding compatibility: Compatible with boards featuring integrated Channel, 4x4, or 2x4 systems via Union adapter plate
- Use: Pro-level freestyle / all-mountain / park (designed for the most direct board connection)
- Skill level: Advanced to Expert (pro-level construction, designed for skilled riders)
In the Box
- 1× Pair Union Source FC Unisex Snowboard Bindings 2027 (selected size: M or L)
- No-Mounting-Disk Design (revolutionary direct connection)
- Reduced Baseplate Height (lower stance, more natural feel)
- Integrated Hardware (compatible with Union's adapter plate system)
- Manufacturer's care instructions
- Union quality assurance (binding-specific warranty)
Rider Profile
Flex Rating
Best For
Pro-Level Freestyle, All-Mountain
Skill Level
Advanced – Expert
Available Sizes
M, L (2 sizes)
Direct Connection Between Rider and Snowboard — "The connection between the rider and the snowboard has never been closer. We've removed the mounting disk, reduced the baseplate height, shaved off hundreds of grams of excess material and completely changed the way that the rider's energy is transferred from the body to the snowboard." No Mounting Disk + Reduced Baseplate Height + Hundreds of Grams Lighter + Direct Energy Transfer + Union Quality. 2 sizes (M, L) — unisex sizing designed for the most direct board connection.
Prepared with intention.
Every product is carefully inspected and handled by our team before it ships. From fit and function to final details, we make sure each piece is ready for the outdoors ahead—so you can focus on the experience, not the gear.
Passion drives us
At SpokeX Bike Co., bikes aren't just our business — they’re our way of life. As a rider-owned and operated shop, every decision we make comes from firsthand experience on the trail, at the race, and on the open road. We know what it’s like to chase a new line, push through the pain cave, and celebrate the ride — because we live it every day.
