Union STR Snowboard Binding 2025

From fresh groomers to deep powder days, the Union STR Bindings deliver reliable all-mountain performance with a medium-stiff flex that's great for progression and control. Built tough with Union’s signature Duraflex construction and packed with pro-level features, the STR is the perfect choice for riders looking to level up without breaking the bank.

Product Details

Flex

• Flex Rating: 6 (1 Soft – 10 Stiff) – A responsive yet accessible flex ideal for all-mountain riding, from carving to side hits.

Baseplate

• Stage 5 | Duraflex: Engineered for consistent flex in cold temps and built to last. Exclusively developed by Union for snowboard bindings.

• EXT Thermoformed EVA Bushing: Multi-density EVA absorbs impact and resists aging—unlike traditional rubber bushings, it stays functional season after season.

• Extruded 3D Aluminum Heelcup: Industry-leading strength and heel hold with minimal drag.

• Canted Footbeds: Angled design improves knee alignment and riding comfort.

Highback

• Stage 11 | Duraflex: Lightweight and responsive with flex engineered for all-mountain and freestyle riders alike.

• Tool-less FLAD: Quickly fine-tune your forward lean without the need for tools.

Straps

• ExoFrame 3.0 Ankle Strap: Lightweight, responsive, and trusted by pro riders for secure comfort and precise control.

• TS 2.1 Tiles Toe Strap: Grips snugly to any boot shape for maximum hold and minimal pressure points.

Buckles

• Aluminum S2 with Steel Base: Durable and smooth-operating ratchets built for years of dependable use.

Additional Features

• Grade 8.8 Steel Hardware: The strongest bolts available—used throughout Union bindings for max durability.

• Camber Disk: Compatible with 4x2, 4x4, and Channel™ mounting systems for universal board fit.

Specs
Ability Level: Intermediate-Advanced
Flex Rating: Medium
Binding Style: Strap
Binding Mount Pattern: 2x4, 4x4, Channel
Warranty: Limited Lifetime (Baseplates & Heelcups), 1 Year (All Other Parts)