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The 2025 Union STR is your all-mountain buddy that packs serious punch without emptying your wallet. With fresh, improved straps and ratchets, it delivers top-tier tech usually reserved for pricier bindings. Ready to boost your skills, it combines the trusty performance, toughness, and comfort you know from Union—all wrapped up in a friendly, budget-savvy package.
Binding Type: All Mountain
Flex: 6/10 (Stiff)
Board Compatibility: Camber Disk, compatible with all 4x4, 4x2 and Channel insert systems.
Baseplate:
Stage 5 Duraflex
Designed as an all-mountain and freeride base, the Stage 5 is lightweight, canted for comfort and power, and offers bomb-proof durability for long lasting performance.
Highback:
S11 Duraflex
The S11 Duraflex gets the blend of flex and response just right.
Buckles:
Aluminium S2 w/Steel
A smooth and fast mechanism combined with Union aluminium creates a light and durable ratchet that feels good, looks good, and works even better.
Straps:
Exoframe 3.0 Ankle Strap + TS 2.1 Tiles Toe Strap
Exoframe 3.0 ankle straps provide a secure and locked in ride feel. Lightweight, super durable and a team favourite.
The TS 2.1 Tiles toe straps are multipositional straps that are made of a grippy anti-slip rubber that fits perfectly to any boot.
Cushioning:
EXT Thermoformed EVA
EXT Thermoformed EVA bushings offer multiple season durability along with a smoother ride, enhanced comfort, and extra impact and vibration absorption when you need it most.
Additional Features:
Extruded 3D Aluminium Heelcups:
This heelcup increased the stiffness of the binding, increases response, and is adjustable to help you dial in the perfect fit.
Classic Forward Lean Adjuster:
No tools needed for this one, just flick the tab down and slide the panel for more response or a looser feeling ride on the fly.
Grade 8.8 Hardware:
Union ensure their hardware is reliable by using the strongest steel available on the market.
Tool-less strap adjust:
Whether you're letting a friend borrow your bindings or you just need to fine tune your fit, you can adjust your straps on the fly without the need for tools.
Canting:
The footbed of this binding is angled to better align your joints and provide a more natural feeling, less fatiguing ride.
MOST IMPORTANTLY!
When you shop with us - We're a REAL store with REAL people who use the gear you're looking at above. You can chat with us about your gear. Whether it's support for something technical, help with fit or anything else in-between.
Matter of fact, you can do that now, Contact us with the form below if you have any questions and you'll get a real answer from us asap.
See you out there!
